[automerger skipped] Add MPEG-H enum. am: 66e55bfd1e am: 2be720f08d am: 0f1e39e905 -s ours

am skip reason: Change-Id I5672f3874f6cffe31a83b6d7e351d0bf56bfd038 with SHA-1 226b119451 is in history

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/1573281

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: Icabf66cc54d59b7f3aa75bb4642ee152d4269b07