s5c73m3: fix indentation of the help section in Kconfig

The 'help' section of the Kconfig entry for this driver is missing a couple of extra spaces.
The effect is an error running 'make xconfig' (seen on the old 2.6.32 kernel from Ubuntu 10.04 when compiling the latest media-build tree):

/lib/modules/2.6.32-46-generic-pae/build/scripts/kconfig/qconf ./Kconfig ./Kconfig:4985: unknown option "This"
./Kconfig:4986: unknown option "8"
make[1]: *** [xconfig] Errore 1

---
 drivers/media/i2c/Kconfig | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

index 9e7ce8b..f981d50 100644
@@ -559,8 +559,8 @@ config VIDEO_S5C73M3
 	tristate "Samsung S5C73M3 sensor support"
 	depends on I2C && SPI && VIDEO_V4L2 && VIDEO_V4L2_SUBDEV_API
 	---help---
-	This is a V4L2 sensor-level driver for Samsung S5C73M3
-	8 Mpixel camera.
+	  This is a V4L2 sensor-level driver for Samsung S5C73M3
+	  8 Mpixel camera.
 
 comment "Flash devices"
 

1.8.2.1