Merge "AudioFlinger: Update MmapThread annotations" into main am: 5eb2d08b0b

Original change: https://android-review.googlesource.com/c/platform/frameworks/av/+/2832877

Change-Id: I4982ba68cc302cc3ab06e4db899b82af3626a138
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>