Merge "audio: Add AudioOffloadMetadata and a method to update it" am: e18f77b983

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2459291

Change-Id: I1bdc96dabb6b647c33e379e858c08d0e6a8e7ba5
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>