Add verity build targets for verity-enabled devices.

Change-Id: Ia9fa8e7ebe01b63e50d61071d36165a6a820c6c4

target/product/verity.mk

@@ -0,0 +1,28 @@
+#
+# Copyright (C) 2014 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.
+#
+
+# Provides dependencies necessary for verified boot
+
+PRODUCT_SUPPORTS_VERITY := true
+PRODUCT_VERITY_SIGNING_KEY := verity.key
+
+PRODUCT_PACKAGES += \
+        generate_verity_key \
+        VeritySigner \
+        verity_signer \
+        build_verity_tree.py \
+        build_verity_metadata.py \
+        append2simg