USB: atm: make atmdev_ops const

Make these const as they are only passed to the function
atm_dev_register and the corresponding argument is of type const.
Done using Coccinelle.
Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/atm/usbatm.c

@@ -173,7 +173,7 @@ static int usbatm_atm_ioctl(struct atm_dev *atm_dev, unsigned int cmd, void __us
 static int usbatm_atm_send(struct atm_vcc *vcc, struct sk_buff *skb);
 static int usbatm_atm_proc_read(struct atm_dev *atm_dev, loff_t *pos, char *page);
 
-static struct atmdev_ops usbatm_atm_devops = {
+static const struct atmdev_ops usbatm_atm_devops = {
 	.dev_close	= usbatm_atm_dev_close,
 	.open		= usbatm_atm_open,
 	.close		= usbatm_atm_close,