video: fbdev: ocfb: add const to of_device_id

struct of_device_id should normally be const.

Signed-off-by: Chunyang Zhong <[e-mail]>
Signed-off-by: Helge Deller <[e-mail]>

drivers/video/fbdev/ocfb.c

···
 	return 0;
 }
 
-static struct of_device_id ocfb_match[] = {
+static const struct of_device_id ocfb_match[] = {
 	{ .compatible = "opencores,ocfb", },
 	{},
 };