[automerger skipped] Add AudioAttributes and AudioFlag for use in HAL interface for engine configuration. am: 8132989a28 am: 8529788701 -s ours am: a890755724 -s ours am: 0c3c4f3071 -s ours am: ca2b1dbf77 -s ours

am skip reason: Merged-In I1ee1f7442a6c037caa45c04d3b3d1df2243b30b8 with SHA-1 160836eadd is already in history

Original change: https://android-review.googlesource.com/c/platform/frameworks/av/+/2203456

Change-Id: If6d923160f42f084bc9a79f3d3086a04060f8750
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>