Merge "AAC Decoder: save decoder config in output format" into rvc-dev am: 6f37518437 am: aac7bf596a am: fd2fd2847e am: 8d85f59269

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/av/+/11816418

Change-Id: I1b936c5740e9f6823c3fca3639c657921a5b8ce5