media: omap3isp: Print the name of the entity where no source pads could be found

If no source pads are found in an entity, print the name of the entity.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

drivers/media/platform/omap3isp/isp.c

@@ -1669,8 +1669,8 @@ static int isp_link_entity(
 			break;
 	}
 	if (i == entity->num_pads) {
-		dev_err(isp->dev, "%s: no source pad in external entity\n",
-			__func__);
+		dev_err(isp->dev, "%s: no source pad in external entity %s\n",
+			__func__, entity->name);
 		return -EINVAL;
 	}