Merge "libaudiohal: Implement basic stream I/O" am: 56006897a2 am: 64d0a27965

Original change: https://android-review.googlesource.com/c/platform/frameworks/av/+/2420554

Change-Id: Ice36c737f19cbe9e262fe0c5f276f032038d1744
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>