Merge "libaudiohal@aidl: Allow unspecified offload bit rate" into main am: 8a1ab3f4

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



Change-Id: I2299111070ccbab6b7f9bb84774a1aa886599019
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>