media: rcar-vin: Do not reset the crop and compose rectangles in s_fmt

The crop and compose rectangles are reset when s_fmt is called
resulting in potentially valid rectangles being lost when updating the
format. Fix this by mapping the rectangles inside the new format.
Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

drivers/media/platform/rcar-vin/rcar-v4l2.c

@@ -283,8 +283,8 @@ static int rvin_s_fmt_vid_cap(struct file *file, void *priv,
 		return ret;
 
 	vin->format = f->fmt.pix;
-	vin->crop = crop;
-	vin->compose = compose;
+	v4l2_rect_map_inside(&vin->crop, &crop);
+	v4l2_rect_map_inside(&vin->compose, &compose);
 	vin->src_rect = crop;
 
 	return 0;