Merge "libaudiohal@aidl: Allow unspecified offload bit rate" into main am: 8a1ab3f4a9 am: 1b8a0a9d2d

Original change: https://android-review.googlesource.com/c/platform/frameworks/av/+/2944347

Change-Id: Id4e53476b68bf8106c6ab7fb8f8e3caa9eff2a67
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>