[automerger skipped] Merge "AudioFlinger: Use optimized code for stereo...

[automerger skipped] Merge "AudioFlinger: Use optimized code for stereo downmix" am: c068aa5d am: c4f9da61 am: d03399ff -s ours am: fae8f9c5 -s ours am: ed50641d -s ours

am skip reason: Merged-In I51dd67cce01c498cc0557c8dd4a0a21bc94a7c6a with SHA-1 4a07d9ad is already in history

Original change: https://android-review.googlesource.com/c/platform/frameworks/av/+/2552041



Change-Id: I3fdb8a656b08b6319868d76efe13c0f23ec50208
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>