[media] media: rc: make device_type const

Make this const as it is only stored in the type field of a device
structure, which is const.
Done using Coccinelle.
Signed-off-by: NBhumika Goyal <bhumirks@gmail.com>
Signed-off-by: NSean Young <sean@mess.org>
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>

drivers/media/rc/rc-main.c

@@ -1529,7 +1529,7 @@ static const struct attribute_group rc_dev_wakeup_filter_attr_grp = {
 	.attrs	= rc_dev_wakeup_filter_attrs,
 };
 
-static struct device_type rc_dev_type = {
+static const struct device_type rc_dev_type = {
 	.release	= rc_dev_release,
 	.uevent		= rc_dev_uevent,
 };