Add GateKeeper to core build

This is built from system/gatekeeper/softgatekeeper.

It will represent the core native library for
validating device Pin/Pattern/Password.

Change-Id: I927c17042e59076eb7867b8855c2970b1c289307

target/product/core_minimal.mk

@@ -50,6 +50,7 @@ PRODUCT_PACKAGES += \
     ip-up-vpn \
     ip6tables \
     iptables \
+    gatekeeper.default \
     keystore \
     keystore.default \
     ld.mc \
@@ -61,6 +62,7 @@ PRODUCT_PACKAGES += \
     libdrmframework_jni \
     libfilterfw \
     libkeystore \
+    libgatekeeper \
     libsqlite_jni \
     libwilhelm \
     logd \

target/product/core_tiny.mk

@@ -54,12 +54,14 @@ PRODUCT_PACKAGES += \
     ip-up-vpn \
     ip6tables \
     iptables \
+    gatekeeper.default \
     keystore \
     keystore.default \
     libOpenMAXAL \
     libOpenSLES \
     libdownmix \
     libfilterfw \
+    libgatekeeper \
     libkeystore \
     libsqlite_jni \
     libwilhelm \