[automerger skipped] Add AudioAttributes and AudioFlag for use in HAL...

[automerger skipped] Add AudioAttributes and AudioFlag for use in HAL interface for engine configuration. am: 160836ea am: c528318a am: 647d1b7a -s ours

am skip reason: Merged-In I1ee1f7442a6c037caa45c04d3b3d1df2243b30b8 with SHA-1 03112f6d is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/av/+/19874388



Change-Id: I62493f95a7cec7f57fb8989b2987542ffed4d1d9
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>