netdev: drivers should make ethtool_ops const

No need to put ethtool_ops in data, they should be const.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/firewire/net.c b/drivers/firewire/net.c
index d923d1d..84edc8b 100644
--- a/drivers/firewire/net.c
+++ b/drivers/firewire/net.c
@@ -1342,7 +1342,7 @@
 	strcpy(info->bus_info, "ieee1394");
 }
 
-static struct ethtool_ops fwnet_ethtool_ops = {
+static const struct ethtool_ops fwnet_ethtool_ops = {
 	.get_drvinfo = fwnet_get_drvinfo,
 };