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

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

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I128adf14758ec0e5606f24c20607f79fbdf7a356