atm: make atmdev_ops const

Make these structures const as they are either passed to the function
atm_dev_register having the corresponding argument as const or stored in
the ops field of a atm_dev structure, which is also const.
Done using Coccinelle.

Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/atm/nicstar.c

@@ -154,7 +154,7 @@ static unsigned char ns_phy_get(struct atm_dev *dev, unsigned long addr);
 
 static struct ns_dev *cards[NS_MAX_CARDS];
 static unsigned num_cards;
-static struct atmdev_ops atm_ops = {
+static const struct atmdev_ops atm_ops = {
 	.open = ns_open,
 	.close = ns_close,
 	.ioctl = ns_ioctl,