Some STM32G3 chips support up to 3 CAN-FD channels, increase number of supported channels in this driver to 3 accordingly. Link: https://lore.kernel.org/all/20220309124132.291861-14-mkl@pengutronix.de Suggested-by: Ryan Edwards <ryan.edwards@gmail.com> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>