Create *_system_ext.mk for system_ext packages

The default packages for system_ext partition must be added to
*_system_ext.mk.
We have empty list for now, but will update the files soon.

Bug: 134359158
Bug: 139053989
Test: build and boot
Change-Id: I78c85c3a9ff0437906143c2d4982ecfb0e4d058d

target/product/base.mk

@@ -17,5 +17,6 @@
 # This makefile is suitable to inherit by products that don't need to be split
 # up by partition.
 $(call inherit-product, $(SRC_TARGET_DIR)/product/base_system.mk)
+$(call inherit-product, $(SRC_TARGET_DIR)/product/base_system_ext.mk)
 $(call inherit-product, $(SRC_TARGET_DIR)/product/base_vendor.mk)
 $(call inherit-product, $(SRC_TARGET_DIR)/product/base_product.mk)

target/product/base_system_ext.mk

@@ -0,0 +1,18 @@
+#
+# Copyright (C) 2019 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+# Base modules and settings for the system_ext partition.
+PRODUCT_PACKAGES += \

target/product/core_minimal.mk

@@ -22,6 +22,7 @@
 # handheld_<x>.mk.
 
 $(call inherit-product, $(SRC_TARGET_DIR)/product/media_system.mk)
+$(call inherit-product, $(SRC_TARGET_DIR)/product/media_system_ext.mk)
 $(call inherit-product, $(SRC_TARGET_DIR)/product/media_vendor.mk)
 $(call inherit-product, $(SRC_TARGET_DIR)/product/media_product.mk)
 

target/product/generic_no_telephony.mk

@@ -21,6 +21,7 @@
 # base_<x>.mk or media_<x>.mk.
 
 $(call inherit-product, $(SRC_TARGET_DIR)/product/handheld_system.mk)
+$(call inherit-product, $(SRC_TARGET_DIR)/product/handheld_system_ext.mk)
 $(call inherit-product, $(SRC_TARGET_DIR)/product/handheld_vendor.mk)
 $(call inherit-product, $(SRC_TARGET_DIR)/product/handheld_product.mk)
 

target/product/handheld_product.mk

@@ -17,7 +17,7 @@
 # This makefile contains the product partition contents for
 # a generic phone or tablet device. Only add something here if
 # it definitely doesn't belong on other types of devices (if it
-# does, use base_vendor.mk).
+# does, use base_product.mk).
 $(call inherit-product, $(SRC_TARGET_DIR)/product/media_product.mk)
 
 # /product packages

target/product/handheld_system_ext.mk

@@ -0,0 +1,24 @@
+#
+# Copyright (C) 2019 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+# This makefile contains the system_ext partition contents for
+# a generic phone or tablet device. Only add something here if
+# it definitely doesn't belong on other types of devices (if it
+# does, use base_system_ext.mk).
+$(call inherit-product, $(SRC_TARGET_DIR)/product/media_system_ext.mk)
+
+# /system_ext packages
+PRODUCT_PACKAGES += \

target/product/mainline.mk

@@ -16,11 +16,13 @@
 
 # This makefile is intended to serve as a base for completely AOSP based
 # mainline devices, It contain the mainline system partition and sensible
-# defaults for the product and vendor partition.
+# defaults for the system_ext, product and vendor partitions.
 $(call inherit-product, $(SRC_TARGET_DIR)/product/mainline_system.mk)
 
+$(call inherit-product, $(SRC_TARGET_DIR)/product/handheld_system_ext.mk)
 $(call inherit-product, $(SRC_TARGET_DIR)/product/handheld_vendor.mk)
 $(call inherit-product, $(SRC_TARGET_DIR)/product/handheld_product.mk)
+$(call inherit-product, $(SRC_TARGET_DIR)/product/telephony_system_ext.mk)
 $(call inherit-product, $(SRC_TARGET_DIR)/product/telephony_vendor.mk)
 $(call inherit-product, $(SRC_TARGET_DIR)/product/telephony_product.mk)
 

target/product/media_product.mk

@@ -17,7 +17,7 @@
 # This makefile contains the product partition contents for
 # media-capable devices (non-wearables). Only add something here
 # if it definitely doesn't belong on wearables. Otherwise, choose
-# base_vendor.mk.
+# base_product.mk.
 $(call inherit-product, $(SRC_TARGET_DIR)/product/base_product.mk)
 
 # /product packages

target/product/media_system_ext.mk

@@ -0,0 +1,24 @@
+#
+# Copyright (C) 2019 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+# This makefile contains the system_ext partition contents for
+# media-capable devices (non-wearables). Only add something here
+# if it definitely doesn't belong on wearables. Otherwise, choose
+# base_system_ext.mk.
+$(call inherit-product, $(SRC_TARGET_DIR)/product/base_system_ext.mk)
+
+# /system_ext packages
+PRODUCT_PACKAGES += \

target/product/telephony.mk

@@ -16,5 +16,6 @@
 
 # All modules for telephony
 $(call inherit-product, $(SRC_TARGET_DIR)/product/telephony_system.mk)
+$(call inherit-product, $(SRC_TARGET_DIR)/product/telephony_system_ext.mk)
 $(call inherit-product, $(SRC_TARGET_DIR)/product/telephony_vendor.mk)
 $(call inherit-product, $(SRC_TARGET_DIR)/product/telephony_product.mk)

target/product/telephony_system_ext.mk

@@ -0,0 +1,21 @@
+#
+# Copyright (C) 2019 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+# This is the list of modules that are specific to products that have telephony
+# hardware, and install to the system_ext partition.
+
+# /system_ext packages
+PRODUCT_PACKAGES += \