[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: 4cd38845 am: 90ed92fd -s ours am: 99fc8045 -s ours

am skip reason: Merged-In I481d4b4e7b4f1302d508ab6eb2c7ed4336a8f801 with SHA-1 cd5387e2 is already in history

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/2203458



Change-Id: Ia978016efa5398d5dfe6532d547366c1bb3ef891
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>