Merge "libbinder: more forcePersist docs" am: e6915d5540 am: 8d009a7e1a am: a8dbf59d98 am: 543fa29161 am: 289d7a9a36 am: ec24c798c6

Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/1707787

Change-Id: I8ffc0d7e6707bb19fcff9e80e7ee8b3657f316c8