Use get_btm_client_interface for security calls am: b914dd51 am: 17cb9d4c...

Use get_btm_client_interface for security calls am: b914dd51 am: 17cb9d4c am: 4d887049 am: 6d944b57

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Bluetooth/+/2786422



Change-Id: I448d3c2a3ae24f2f1caafcbaffd3e0cf58342917
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>