media: v4l: fwnode: The CSI-2 clock is continuous if it's not non-continuous

media: v4l: fwnode: The CSI-2 clock is continuous if it's not non-continuous

The continuous clock flag was only set if there was a clock or data lanes.
This isn't needed as such a configuration is invalid to begin with. Always
set the continuous clock flag if the non-continuous property is not found.

Signed-off-by: Sakari Ailus <[email protected]>
Tested-by: Steve Longerbeam <[email protected]>
Tested-by: Jacopo Mondi <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>