Add HAL interface for Bluetooth Socket Offload am: eb5b4885e2

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/3303007

Change-Id: I53d31f61a097e7f8639e009dd61ed426456b5912
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>