[automerger skipped] AVRCP: Use calloc to zero reserved fields am: 89df81fc -s ours am: fc36e3a1 am: 635e4ce5 am: 0ca5c483

Original change: https://googleplex-android-review.googlesource.com/c/platform/system/bt/+/13204458

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: Ie228f745b5ac42647b9c281c30f448b42f674252