FIFO water marks disabled because the driver doesn't handle water mark
events.
Signed-off-by: NMario Huettel <mario.huettel@gmx.net>
Reviewed-by: NOliver Hartkopp <socketcan@hartkopp.net>
Tested-by: NQuentin Schulz <quentin.schulz@free-electrons.com>
Signed-off-by: NMarc Kleine-Budde <mkl@pengutronix.de>