can: pch_can: do not report txerr and rxerr during bus-off

can: pch_can: do not report txerr and rxerr during bus-off

[ Upstream commit cafa6337968febc7a5ca915afca90940cb2ec4f8 ]

During bus off, the error count is greater than 255 and can not fit in
a u8.

Fixes: c597aefab4d8 ("pch_can: Add setting TEC/REC statistics processing")
Link: https://lore.kernel.org/all/20220719143550.3681-2-mailhol.vincent@wanadoo.fr
Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>