Merge "libaudiohal: Fix initialization of SinkMetadata for HAL V7" am: 1b8e0f7dd5

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

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I78b712e83dec248402d6196e45bfe20ac7df1de4