Merge "aaudio: prevent very short sleeps in callback thread" into tm-dev am: a641b58b

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/av/+/17825633



Change-Id: I8f80a229f42344ab730b8c416841dd3c3331ff4e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>