V4L/DVB (12470): cx231xx/cx231xx-conf-reg.h: fix bad whitespaces

It were using 7 spaces instead of tab for indent.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/video/cx231xx/cx231xx-conf-reg.h

@@ -60,10 +60,10 @@
 #define PWR_RESETOUT_EN         0x100  /* bit8 */
 
 enum AV_MODE{
-       POLARIS_AVMODE_DEFAULT = 0,
-       POLARIS_AVMODE_DIGITAL = 0x10,
-       POLARIS_AVMODE_ANALOGT_TV = 0x20,
-       POLARIS_AVMODE_ENXTERNAL_AV = 0x30,
+	POLARIS_AVMODE_DEFAULT = 0,
+	POLARIS_AVMODE_DIGITAL = 0x10,
+	POLARIS_AVMODE_ANALOGT_TV = 0x20,
+	POLARIS_AVMODE_ENXTERNAL_AV = 0x30,
 
 };