[automerger skipped] Merge "AudioFlinger: Use audio_utils::mutex" into udc-dev-plus-aosp am: 65427d50cb am: 05101a67de -s ours am: 14d9c4fa15 -s ours

am skip reason: Merged-In Iba9e1e8f6d5f9ad2e31ea4e09598f2829ece3f02 with SHA-1 85a074502c is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/av/+/24829131

Change-Id: I7d83c94c6aee86b3e408a90de027701e78f41d01
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>