fbdev: i810: make fb_ops const

Make the structure const as it is only used during a copy operation.
Done using Coccinelle.

Signed-off-by: Bhumika Goyal <[e-mail]>
Cc: Julia Lawall <[e-mail]>
Cc: Antonino Daplas <[e-mail]>
Signed-off-by: Bartlomiej Zolnierkiewicz <[e-mail]>

drivers/video/fbdev/i810/i810_main.c

···
 	return 0;
 }
 
-static struct fb_ops i810fb_ops = {
+static const struct fb_ops i810fb_ops = {
 	.owner =             THIS_MODULE,
 	.fb_open =           i810fb_open,
 	.fb_release =        i810fb_release,