[automerger skipped] audio: Add recommended mute duration attribute to APM XSD...

[automerger skipped] audio: Add recommended mute duration attribute to APM XSD am: 22dc9b9a am: f8548b96 am: 1201a6c6 -s ours

am skip reason: Merged-In I3be36009d1b5db218c846efe96f078e858283992 with SHA-1 b6800fc7 is already in history

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/1978751

Change-Id: Ib51b81e95ba386aed277cb6f48bc091a1da6862e