media: rzg2l-cru: csi2: Use rzg2l_csi2_formats array in enum_frame_size

Make use of `rzg2l_csi2_formats` array in rzg2l_csi2_enum_frame_size() to
validate if the `fse->code` is supported.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Link: https://lore.kernel.org/r/20241018133446.223516-20-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>

drivers/media/platform/renesas/rzg2l-cru/rzg2l-csi2.c

@@ -573,6 +573,9 @@ static int rzg2l_csi2_enum_frame_size(struct v4l2_subdev *sd,
 	if (fse->index != 0)
 		return -EINVAL;
 
+	if (!rzg2l_csi2_code_to_fmt(fse->code))
+		return -EINVAL;
+
 	fse->min_width = RZG2L_CSI2_MIN_WIDTH;
 	fse->min_height = RZG2L_CSI2_MIN_HEIGHT;
 	fse->max_width = RZG2L_CSI2_MAX_WIDTH;