fbdev: imxfb: add missing spaces after ','

Fix the following checkpatch error:

ERROR: space required after that ',' (ctx:VxV)
Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
Signed-off-by: Helge Deller <deller@gmx.de>

drivers/video/fbdev/imxfb.c

@@ -280,10 +280,10 @@ static int imxfb_setpalettereg(u_int regno, u_int red, u_int green, u_int blue,
 	struct imxfb_info *fbi = info->par;
 	u_int val, ret = 1;
 
-#define CNVT_TOHW(val,width) ((((val)<<(width))+0x7FFF-(val))>>16)
+#define CNVT_TOHW(val, width) ((((val)<<(width))+0x7FFF-(val))>>16)
 	if (regno < fbi->palette_size) {
 		val = (CNVT_TOHW(red, 4) << 8) |
-		      (CNVT_TOHW(green,4) << 4) |
+		      (CNVT_TOHW(green, 4) << 4) |
 		      CNVT_TOHW(blue,  4);
 
 		writel(val, fbi->regs + 0x800 + (regno << 2));