Merge "Block new Android.mk added to all directories except the directories...

Merge "Block new Android.mk added to all directories except the directories for partners" into main am: ba653991

Original change: https://android-review.googlesource.com/c/platform/build/soong/+/3545613



Change-Id: Id8274a2199039e53936b149fa282d3a4341a25c0
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>