1. Update BSP CANFD driver
2. Notes for implementation
(1) Each CANFD instance supports two IRQ lines. Use only line 0. Line 1 is not used.
(2) For Rx disabling multiple filter handles,
1) Map all filter handles to filter handle 0
2) Use Rx FIFO 0 for filter handle 0
(3) For Rx enabling multiple filter handles,
1) Use Rx FIFO 0 for filter handle 0
2) Use Rx FIFO 1 for filter handle through first invoking can_filter()
3) Use dedicated Rx Buffer for other filter handles
NOTE: H/W supports mask on Rx FIFO 0/1 but not on dedicated Rx Buffer.
(4) For Tx, use only dedicated Tx Buffer. BSP CANFD driver doesn't support Tx FIFO/Queue.
(5) Support no CAN FD.
Chun-Chieh Li