media: imx: imx7-mipi-csis: Implement get_fwnode_pad op

Use v4l2_subdev_get_fwnode_pad_1_to_1() as the get_fwnode_pad operation.
The imx7-mipi-csis maps port numbers and pad indexes 1:1.
Signed-off-by: Steve Longerbeam <slongerbeam@gmail.com>
Acked-by: Rui Miguel Silva <rmfrfs@gmail.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

drivers/staging/media/imx/imx7-mipi-csis.c

@@ -906,6 +906,7 @@ static const struct v4l2_subdev_core_ops mipi_csis_core_ops = {
 static const struct media_entity_operations mipi_csis_entity_ops = {
 	.link_setup	= mipi_csis_link_setup,
 	.link_validate	= v4l2_subdev_link_validate,
+	.get_fwnode_pad = v4l2_subdev_get_fwnode_pad_1_to_1,
 };
 
 static const struct v4l2_subdev_video_ops mipi_csis_video_ops = {