BT: add LOW_LATENCY mode if low latency allowed am: 25b4819e08 am: 2194196c50

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2696655

Change-Id: I383fa2c6999bd9a030b29062660db3ef4bc57807
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>