media: ov2680: Do not fail if data-lanes property is absent

Since commit 63b0cd30 ("media: ov2680: Add bus-cfg / endpoint
property verification") the ov2680 driver no longer probes when the
'data-lanes' property is absent.

The OV2680 sensor has only one data lane, so there is no need for
describing it the devicetree.

Remove the unnecessary data-lanes property check.

Suggested-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Fixes: 63b0cd30 ("media: ov2680: Add bus-cfg / endpoint property verification")
Signed-off-by: Fabio Estevam <festevam@denx.de>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>