Merge "Audio : Add remote submix stream implementation" am: 12e6f0c42e am: cc562a7e03 am: e6f3ce4e0d am: d2a16a725f

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

Change-Id: I4e309f3b0f887363836d91a8007dbdc0b03b1ab7
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>