can: m_can: use consistent indention

The driver uses indent-with-tab for defines. Replace spaces after
IR_ERR_BUS_31X with tab for consistent indention.

Link: https://lore.kernel.org/all/20221024185544.68240-1-mkl@pengutronix.deSigned-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

drivers/net/can/m_can/m_can.c

@@ -210,7 +210,7 @@ enum m_can_reg {
 
 /* Interrupts for version >= 3.1.x */
 #define IR_ERR_LEC_31X	(IR_PED | IR_PEA)
-#define IR_ERR_BUS_31X      (IR_ERR_LEC_31X | IR_WDI | IR_BEU | IR_BEC | \
+#define IR_ERR_BUS_31X	(IR_ERR_LEC_31X | IR_WDI | IR_BEU | IR_BEC | \
 			 IR_TOO | IR_MRAF | IR_TSW | IR_TEFL | IR_RF1L | \
 			 IR_RF0L)
 #define IR_ERR_ALL_31X	(IR_ERR_STATE | IR_ERR_BUS_31X)