can: tcan4x5x: tcan4x5x_regmap: set reg_stride to 4

This patch sets the regmap stide to 4, as the chip only supports access on 32
bit alligned access.
Reviewed-by: Dan Murphy <dmurphy@ti.com>
Tested-by: Sean Nyekjaer <sean@geanix.com>
Link: https://lore.kernel.org/r/20201215231746.1132907-13-mkl@pengutronix.deSigned-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

drivers/net/can/m_can/tcan4x5x-regmap.c

@@ -55,6 +55,7 @@ static int tcan4x5x_regmap_read(void *context,
 
 static const struct regmap_config tcan4x5x_regmap = {
 	.reg_bits = 32,
+	.reg_stride = 4,
 	.val_bits = 32,
 	.cache_type = REGCACHE_NONE,
 	.max_register = TCAN4X5X_MAX_REGISTER,