media: imx: Move dependency on VIDEO_DEV to common Kconfig symbol

All the i.MX staging media drivers depend on VIDEO_DEV. Move the
dependency to the common VIDEO_IMX_MEDIA symbol to avoid repeating it.

While at it, sort the dependencies and selections alphabetically.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Rui Miguel Silva <rmfrfs@gmail.com>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>