media: Add lane checks for Cadence CSI2TX

This patch adds lane checks for CSI2TX, to prevent clock lane
being used as a data lane.

Signed-off-by: Jan Kotas <jank@cadence.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>