Merge "Add AUDIO_FORMAT_MAT to the list of formats in XSD V6" am: fa085b5a9e am: 241e5a49ad

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/1559800

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I617fcff38a9130418e292d0282a128cfd1b069c0