Merge "AudioMixerOps: Support 10-channel" into main am: 13b8e00b3d

Original change: https://android-review.googlesource.com/c/platform/frameworks/av/+/3148412

Change-Id: I2552983060f7313f4db86a52a984b1a397a61198
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>