driver: can: spi: add mcp25xxfd driver

mcp25xxfd is a CAN bus controller with SPI interface,
which support CAN FD and CAN classic format CAN frame.

Change-Id: I9d6cdc2521beb2fff8ccb063c9dddefa09e5a641
Signed-off-by: Meng Jiang <mengjian@codeaurora.org>
5 files changed