Merge "AudioMixerOps: update for front wide left/right" into sc-v2-dev am: 05a9b71cf5 am: 3e86ee3d0f

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/av/+/15864090

Change-Id: I578f602be093e5e61f5b0ef91a9f56354b9c6925