Merge "AAudio: Add comments to missing result types" into udc-dev am: f19465f4 am: fa18975b

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/av/+/22104382



Change-Id: Ieaa9493a0231d358db06c2ce22ae68093e767d7f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>