[media] v4l: s5p-tv: add SDO driver for Samsung S5P platform

Add drivers for Standard Definition output (SDO) on Samsung platforms
from S5P family. The driver provides control over streaming analog TV
via Composite connector.

Driver is using:
- v4l2 framework
- runtime PM

Signed-off-by: Tomasz Stanislawski <t.stanislaws@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Reviewed-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Reviewed-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/video/s5p-tv/Kconfig b/drivers/media/video/s5p-tv/Kconfig
index 893be5b..9c1f634 100644
--- a/drivers/media/video/s5p-tv/Kconfig
+++ b/drivers/media/video/s5p-tv/Kconfig
@@ -46,4 +46,15 @@
 	  as module. It is an I2C driver, that exposes a V4L2
 	  subdev for use by other drivers.
 
+config VIDEO_SAMSUNG_S5P_SDO
+	tristate "Samsung Analog TV Driver"
+	depends on VIDEO_DEV && VIDEO_V4L2
+	depends on VIDEO_SAMSUNG_S5P_TV
+	help
+	  Say Y here if you want support for the analog TV output
+	  interface in S5P Samsung SoC. The driver can be compiled
+	  as module. It is an auxiliary driver, that exposes a V4L2
+	  subdev for use by other drivers. This driver requires
+	  hdmiphy driver to work correctly.
+
 endif # VIDEO_SAMSUNG_S5P_TV