Merge "Use vndk.private: true for VNDK-private libs" am: e55e094041 am: c9f93a8961

Original change: https://android-review.googlesource.com/c/platform/development/+/1538756

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I6cf8756dad017b293c5244d5da461ca2116d0f4d