Merge "disable audio balance in voip call for mono channel" into udc-dev am: c269d3d8

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/av/+/22302755



Change-Id: I0bdda6d5e02fb17e76a387b9592b7049992c0564
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>