[media] s5c73m3: fix indentation of the help section in Kconfig

The 'help' section of the Kconfig entry for this driver is missing
an extra alignment. That seems to violate what's stated at:
	Documentation/kbuild/kconfig-language.txt

Even if it works, the better is to add 2 extra spaces there, as
this is the common practice and helps human reading of the file.

Also, the way it is, it breaks backport trees.
Signed-off-by: NGianluca Gennari <gennarone@gmail.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/i2c/Kconfig

@@ -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"