can: m_can: fix whitespace in a few comments

Fixes whitespace in comments titling sections of register masks.

Link: https://lore.kernel.org/r/20210504125123.500553-5-torin@maxiluxsystems.comSigned-off-by: NTorin Cooper-Bennun <torin@maxiluxsystems.com>
Signed-off-by: NMarc Kleine-Budde <mkl@pengutronix.de>

drivers/net/can/m_can/m_can.c

@@ -101,7 +101,7 @@ enum m_can_reg {
 /* Test Register (TEST) */
 #define TEST_LBCK		BIT(4)
 
-/* CC Control Register(CCCR) */
+/* CC Control Register (CCCR) */
 #define CCCR_TXP		BIT(14)
 #define CCCR_TEST		BIT(7)
 #define CCCR_DAR		BIT(6)
@@ -147,18 +147,18 @@ enum m_can_reg {
 /* Timestamp Counter Value Register (TSCV) */
 #define TSCV_TSC_MASK		GENMASK(15, 0)
 
-/* Error Counter Register(ECR) */
+/* Error Counter Register (ECR) */
 #define ECR_RP			BIT(15)
 #define ECR_REC_MASK		GENMASK(14, 8)
 #define ECR_TEC_MASK		GENMASK(7, 0)
 
-/* Protocol Status Register(PSR) */
+/* Protocol Status Register (PSR) */
 #define PSR_BO		BIT(7)
 #define PSR_EW		BIT(6)
 #define PSR_EP		BIT(5)
 #define PSR_LEC_MASK	GENMASK(2, 0)
 
-/* Interrupt Register(IR) */
+/* Interrupt Register (IR) */
 #define IR_ALL_INT	0xffffffff
 
 /* Renamed bits for versions > 3.1.x */
@@ -250,7 +250,7 @@ enum m_can_reg {
 #define TXFQS_TFGI_MASK		GENMASK(12, 8)
 #define TXFQS_TFFL_MASK		GENMASK(5, 0)
 
-/* Tx Buffer Element Size Configuration(TXESC) */
+/* Tx Buffer Element Size Configuration (TXESC) */
 #define TXESC_TBDS_MASK		GENMASK(2, 0)
 #define TXESC_TBDS_64B		0x7