Revert "can: xilinx_can: Limit CANFD brp to 2"

This reverts commit 05ca14fd.

On early silicon engineering samples observed bit shrinking issue when
we use brp as 1. Hence updated brp_min as 2. As in production silicon
this issue is fixed, so reverting the patch.

Link: https://lore.kernel.org/all/20220609082433.1191060-2-srinivas.neeli@xilinx.com


Signed-off-by: Srinivas Neeli <srinivas.neeli@xilinx.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>