Merge "libaudiohal: mmap playback support" am: 88e189e8 am: ed2e7d7f am:...

Merge "libaudiohal: mmap playback support" am: 88e189e8 am: ed2e7d7f am: ef4e1fd2 am: b7c5ddba

Original change: https://android-review.googlesource.com/c/platform/frameworks/av/+/2514035



Change-Id: I48f5c6c299865d0abc35ded44d36d82938ccac57
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>