media: ov5675: suppress probe deferral errors

Probe deferral should not be logged as an error:

	ov5675 24-0010: failed to get HW configuration: -517

Drop the (mostly) redundant dev_err() from sensor probe() to suppress
it.

Note that errors during clock and regulator lookup are already correctly
logged using dev_err_probe().

Fixes: 49d9ad71 ("media: ov5675: add device-tree support and support runtime PM")
Cc: stable@vger.kernel.org
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>