Merge "Audio : Add remote submix stream implementation" am: 12e6f0c42e am: cc562a7e03 am: e6f3ce4e0d am: d2a16a725f am: 9be11d51f7 am: 79b806ccb7

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2560751

Change-Id: I31a463af6fa7d7f8d3b75d174ca379f42e948b35
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>