media: Kconfig: move V4L2 subdev API to v4l2-core/Kconfig

This option is part of V4L2 API extra functionality set.
Move it to be at the v4l2-core/Kconfig, where it belongs,
cleaning the main Kconfig file.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

drivers/media/Kconfig

@@ -136,15 +136,6 @@ config VIDEO_DEV
 	prompt "Video4Linux core" if !(MEDIA_HYBRID_USB || MEDIA_HYBRID_PCI)
 	default MEDIA_CAMERA_SUPPORT || MEDIA_ANALOG_TV_SUPPORT || MEDIA_RADIO_SUPPORT || MEDIA_SDR_SUPPORT || MEDIA_PLATFORM_SUPPORT || MEDIA_TEST_SUPPORT || MEDIA_HYBRID_USB || MEDIA_HYBRID_PCI
 
-config VIDEO_V4L2_SUBDEV_API
-	bool "V4L2 sub-device userspace API"
-	depends on VIDEO_DEV && MEDIA_CONTROLLER
-	help
-	  Enables the V4L2 sub-device pad-level userspace API used to configure
-	  video format, size and frame rate between hardware blocks.
-
-	  This API is mostly used by camera interfaces in embedded platforms.
-
 #
 # DVB Core
 #	Only enables if one of DTV is selected

drivers/media/v4l2-core/Kconfig

@@ -16,6 +16,15 @@ config VIDEO_V4L2_I2C
 	depends on I2C && VIDEO_V4L2
 	default y
 
+config VIDEO_V4L2_SUBDEV_API
+	bool "V4L2 sub-device userspace API"
+	depends on VIDEO_DEV && MEDIA_CONTROLLER
+	help
+	  Enables the V4L2 sub-device pad-level userspace API used to configure
+	  video format, size and frame rate between hardware blocks.
+
+	  This API is mostly used by camera interfaces in embedded platforms.
+
 config VIDEO_ADV_DEBUG
 	bool "Enable advanced debug functionality on V4L2 drivers"
 	help