Merge "Use vndk.private: true for VNDK-private libs" am: e55e094041 am: c9f93a8961 am: 38408b9d4c

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

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I1b24e21bebee7872799cc6e5d90d72fdf1163278