NdkMediaFormat: Add MPEG-H constants

  Java: MediaFormat.KEY_MPEGH_COMPATIBLE_SETS
  Ndk:  AMEDIAFORMAT_KEY_MPEGH_COMPATIBLE_SETS

  Java: MediaFormat.KEY_MPEGH_PROFILE_LEVEL_INDICATION
  Ndk:  AMEDIAFORMAT_KEY_MPEGH_PROFILE_LEVEL_INDICATION

  Java: MediaFormat.KEY_MPEGH_REFERENCE_CHANNEL_LAYOUT
  Ndk:  AMEDIAFORMAT_KEY_MPEGH_REFERENCE_CHANNEL_LAYOUT

Test: compiles, MPEG-H standard used immersive audio
Bug: 194313740
Change-Id: Iae3baf7b73dfc133b9f61810f38f5723ef1cea78