Add tetheroffload HAL APEX am: d254e37e32

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2749882

Change-Id: I7cacb9c989b61d10243a93febdd16dfa99c5f261
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>