media: v4l: Use correct dependency for camera sensor drivers

The Kconfig option that enables compiling camera sensor drivers is
VIDEO_CAMERA_SENSOR rather than MEDIA_CAMERA_SUPPORT as it was previously.
Fix this.

Also select VIDEO_OV7670 for marvell platform drivers only if
MEDIA_SUBDRV_AUTOSELECT and VIDEO_CAMERA_SENSOR are enabled.

Reported-by: Randy Dunlap <rdunlap@infradead.org>
Fixes: 7d3c7d2a ("media: i2c: Add a camera sensor top level menu")
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>