Merge "audio: Add AudioOffloadMetadata and a method to update it" am: e18f77b983 am: 38cf924450

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

Change-Id: I7ba9cf4b567c39f84d9d1d7b599975bf80d9330c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>