Merge "Effect AIDL: remove unnecessary mutex in Reverb" into main am: bbd7f95d4e

Original change: https://android-review.googlesource.com/c/platform/frameworks/av/+/3002886

Change-Id: I73cb3e9d7b5a7e39ecfbfcbf819bcdf497ecb7be
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>