Merge "Move frameworks/base/Android.mk to build/core" into main am: 9138e5069b

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/2990318

Change-Id: I37ab3afec228ee1c9115dd9a245d8ef1b67b6a85
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>