Merge "Clarify AAudio.h method documentation" into sc-dev am: 1ba66b4fd7 am: 53e4541386 am: 0eb2549266

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/av/+/14647827

Change-Id: Ifc1df074c6df93cc61a4cf63247128dc6ced8883