[media] constify of_device_id array

of_device_id is always used as const.
(See driver.of_match_table and open firmware functions)

[mchehab@osg.samsung.com: fix a merge conflict at adv7604.c]
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Acked-by: Patrice Chotard <patrice.chotard@st.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

drivers/media/platform/fsl-viu.c

@@ -1664,7 +1664,7 @@ static int viu_resume(struct platform_device *op)
 /*
  * Initialization and module stuff
  */
-static struct of_device_id mpc512x_viu_of_match[] = {
+static const struct of_device_id mpc512x_viu_of_match[] = {
 	{
 		.compatible = "fsl,mpc5121-viu",
 	},