Merge "audio: Remove dependency on libxml2 from the default implementation" am: 3731b18cfc am: 5a899a388e am: 1238ad0c71

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

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I7f3412cf3af28dc57221dcadf4769e2f7f32430c