Merge "Have cargo2android put warning not to modify Android.bp files" am: 5b630e0f9f am: e40c638c41

Original change: https://android-review.googlesource.com/c/platform/development/+/1594452

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I4b77167b0830b823e5a31fb19432eec7a6fdb66b