Add default implementation for Bluetooth Socket Offload am: caec34bdce am: 6863daa0d6

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/3308495

Change-Id: I3ac13b6a98e69d7420614fb8a2d9558cba5fe9aa
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>