[media] media: i2c: Kconfig: create dependency to MEDIA_CONTROLLER for adv7*

These chips makes use of the media_entity in the v4l2_subdev struct
and is therefor dependent of the  MEDIA_CONTROLLER config.

Signed-off-by: Marcus Folkesson <marcus.folkesson@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>