There are some makefile inherit from aosp_$arch*.mk. This patch
change to only enable mainline checking on excat GSI targets,
such as aosp_$arch or aosp_$arch_(a|ab), and does not apply on
the child targets.
This patch also add some more whitelist items to gsi_common.mk
Bug: 123613261
Test: aosp_arm64-userdebug build pass
Test: remove some whitelist items and aosp_arm64-userdebug build fail
Test: sdk_phone_arm64-eng build pass
Test: gsi_arm64-userdebug build pass
Change-Id: I1772a55ab823a0312b9f215f0d2c3b0c727c8e4b
gsi_common.mk is a new makefile file for GSI build targets.
It inherited the content from Mainline by mainline_system.mk.
Also it include other default GSI settings and try to covered
all contents from aosp_base_telephony.mk
It will be used to replace the treble_common*.mk. All
aosp_$arch*.mk will become to inherit from gsi_common.mk.
This patch also contains a new build target gsi_arm64,
which is used to test the gsi_common.mk purely.
Bug: 119747870
Test: compare the out system folder between gsi_arm64 and aosp_arm64
Test: also the gsi_arm64-userdebuge can boot on a Pixel device
Change-Id: I9a013f9407e0fe06b45011e36d5169b94f67148d
