[MIPS] checkfiles: Fix "need space after that ','" errors.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/au1000/pb1200/irqmap.c b/arch/mips/au1000/pb1200/irqmap.c
index b73b2d1..7c708db 100644
--- a/arch/mips/au1000/pb1200/irqmap.c
+++ b/arch/mips/au1000/pb1200/irqmap.c
@@ -132,7 +132,7 @@
 	pb1200_disable_irq(irq_nr);
 	if (--pb1200_cascade_en == 0)
 	{
-		free_irq(AU1000_GPIO_7,&pb1200_cascade_handler );
+		free_irq(AU1000_GPIO_7, &pb1200_cascade_handler );
 	}
 	return;
 }