As you know, R13.4.1 doesn't support Bluetooth. These attached patches enable Bluetooth for R13.4.1.
Before applying the patches for MX6 SabreSD, please rework SabreSD. Refer to How to enable BT on board imx6q_sabresd RevC.
I need to hard to do it. if I use BC6888 instead of ar3002, how can I do