Merge "audio: Remove dependency on libxml2 from the default implementation" am: 3731b18cfc

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/1595307

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I8c5a200a80c9f089d697ec4e0dcee0ed0561d51f