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

Merge "disable audio balance in voip call for mono channel" into udc-dev am: c269d3d8 am: 18c38405

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



Change-Id: I708eaf54d91bc4c9b423b3b898bf601d1fb87db9
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>