can: xilinx_can: Add ECC support

Add ECC support for Xilinx CAN Controller, so this driver reports
1bit/2bit ECC errors for FIFO's based on ECC error interrupt. ECC
feature for Xilinx CAN Controller selected through 'xlnx,has-ecc' DT
property

Signed-off-by: Srinivas Goud <srinivas.goud@amd.com>
Link: https://lore.kernel.org/all/20240213-xilinx_ecc-v8-2-8d75f8b80771@pengutronix.de


Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>