Merge "libaudiohal: Fix initialization of SinkMetadata for HAL V7" am: 1b8e0f7dd5 am: 412ec213b5 am: 7516d6d11d

Original change: https://android-review.googlesource.com/c/platform/frameworks/av/+/1580726

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I52fb2ca5efdd4f81479cc4c858ca936c88ceca64