media: drivers: media: i2c: don't enable if CONFIG_DRM_I2C_ADV7511=n

CONFIG_DRM_I2C_ADV7511 and CONFIG_VIDEO_ADV7511 bind to the same
platform device, so whichever driver gets loaded first will be used on
the device. So they shouldn't be enabled at the same time.

Rework so that VIDEO_ADV7511 and VIDEO_COBALT depends on
DRM_I2C_ADV7511=n or COMPILE_TEST.

Suggested-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Anders Roxell <anders.roxell@linaro.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

drivers/media/pci/cobalt/Kconfig

@@ -3,7 +3,7 @@ config VIDEO_COBALT
 	tristate "Cisco Cobalt support"
 	depends on VIDEO_V4L2 && I2C && VIDEO_V4L2_SUBDEV_API
 	depends on PCI_MSI && MTD_COMPLEX_MAPPINGS
-	depends on GPIOLIB || COMPILE_TEST
+	depends on (GPIOLIB && DRM_I2C_ADV7511=n) || COMPILE_TEST
 	depends on SND
 	depends on MTD
 	select I2C_ALGOBIT