Merge "Audio : Add remote submix stream implementation" am: 12e6f0c4 am: cc562a7e

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



Change-Id: I6f9f7d2e4c84b1982a3289c78bd7079a1babb094
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>