Merge "r_submix: add owners file" am: 593bff82da am: eba0d7f70e am: a66b1a2486 am: 140613a961

Original change: https://android-review.googlesource.com/c/platform/hardware/libhardware/+/1935497

Change-Id: I50f08b51fbc69e8262f7cc005fc5de3f1b74739e