qlge: make nic_operations struct const

The struct nic_operations is just function pointers and should be
declared const for added security.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/qlge/qlge.h

@@ -2134,7 +2134,7 @@ struct ql_adapter {
 	struct delayed_work mpi_idc_work;
 	struct delayed_work mpi_core_to_log;
 	struct completion ide_completion;
-	struct nic_operations *nic_ops;
+	const struct nic_operations *nic_ops;
 	u16 device_id;
 	struct timer_list timer;
 	atomic_t lb_count;

drivers/net/qlge/qlge_main.c

@@ -4412,12 +4412,12 @@ error:
 	rtnl_unlock();
 }
 
-static struct nic_operations qla8012_nic_ops = {
+static const struct nic_operations qla8012_nic_ops = {
 	.get_flash		= ql_get_8012_flash_params,
 	.port_initialize	= ql_8012_port_initialize,
 };
 
-static struct nic_operations qla8000_nic_ops = {
+static const struct nic_operations qla8000_nic_ops = {
 	.get_flash		= ql_get_8000_flash_params,
 	.port_initialize	= ql_8000_port_initialize,
 };