can: drivers: fix spelling mistakes

This patch fixes spelling erros found by "codespell" in the
drivers/net/can subtree.

Link: https://lore.kernel.org/r/20200915223527.1417033-6-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

drivers/net/can/cc770/cc770.c

@@ -538,7 +538,7 @@ static int cc770_err(struct net_device *dev, u8 status)
 			priv->can.can_stats.error_warning++;
 		}
 	} else {
-		/* Back to error avtive */
+		/* Back to error active */
 		cf->can_id |= CAN_ERR_PROT;
 		cf->data[2] = CAN_ERR_PROT_ACTIVE;
 		priv->can.state = CAN_STATE_ERROR_ACTIVE;

drivers/net/can/cc770/cc770.h

@@ -184,7 +184,7 @@ struct cc770_priv {
 	u8 control_normal_mode;	/* Control register for normal mode */
 	u8 cpu_interface;	/* CPU interface register */
 	u8 clkout;		/* Clock out register */
-	u8 bus_config;		/* Bus conffiguration register */
+	u8 bus_config;		/* Bus configuration register */
 
 	struct sk_buff *tx_skb;
 };