mfd: dm355evm_msp: Fix checkpatch error: insert space after ','

This is part of an effort to clean-up the MFD subsystem.

ERROR: space required after that ',' (ctx:VxV)
+#define MSP_GPIO(bit,reg)      ((DM355EVM_MSP_ ## reg) << 3 | (bit))
                     ^

total: 1 errors, 0 warnings, 437 lines checked

Signed-off-by: Lee Jones <[email protected]>
diff --git a/drivers/mfd/dm355evm_msp.c b/drivers/mfd/dm355evm_msp.c
index 7a55c00..4c826f7 100644
--- a/drivers/mfd/dm355evm_msp.c
+++ b/drivers/mfd/dm355evm_msp.c
@@ -95,7 +95,7 @@
  * Many of the msp430 pins are just used as fixed-direction GPIOs.
  * We could export a few more of them this way, if we wanted.
  */
-#define MSP_GPIO(bit,reg)	((DM355EVM_MSP_ ## reg) << 3 | (bit))
+#define MSP_GPIO(bit, reg)	((DM355EVM_MSP_ ## reg) << 3 | (bit))
 
 static const u8 msp_gpios[] = {
 	/* eight leds */