media: DaVinci-VPBE: constify vpbe_dev_ops

vpbe_dev_ops is only copied into the ops field at the end of a vpbe_device
structure, so it can be const.
Signed-off-by: NJulia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

drivers/media/platform/davinci/vpbe.c

@@ -790,7 +790,7 @@ static void vpbe_deinitialize(struct device *dev, struct vpbe_device *vpbe_dev)
 	vpss_enable_clock(VPSS_VPBE_CLOCK, 0);
 }
 
-static struct vpbe_device_ops vpbe_dev_ops = {
+static const struct vpbe_device_ops vpbe_dev_ops = {
 	.g_cropcap = vpbe_g_cropcap,
 	.enum_outputs = vpbe_enum_outputs,
 	.set_output = vpbe_set_output,