media: ov2740: Return -EPROBE_DEFER if no endpoint is found
With ipu bridge, endpoints may only be created when ipu bridge has initialised. This may happen after the sensor driver has first probed. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
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