media: imx: Fix VDIC CSI1 selection

When using VDIC with CSI1, make sure to select the correct CSI in
IPU_CONF.

Fixes: f0d9c892 ("[media] media: imx: Add IC subdev drivers")
Suggested-by: Marek Vasut <marex@denx.de>
Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Acked-by: Steve Longerbeam <steve_longerbeam@mentor.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

drivers/staging/media/imx/imx-ic-prp.c

@@ -320,9 +320,10 @@ static int prp_link_validate(struct v4l2_subdev *sd,
 		 * the ->PRPENC link cannot be enabled if the source
 		 * is the VDIC
 		 */
-		if (priv->sink_sd_prpenc)
+		if (priv->sink_sd_prpenc) {
 			ret = -EINVAL;
 			goto out;
+		}
 	} else {
 		/* the source is a CSI */
 		if (!csi) {