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/net/bnx2x_main.c b/drivers/net/bnx2x_main.c
index e2e5026..20f0ed9 100644
--- a/drivers/net/bnx2x_main.c
+++ b/drivers/net/bnx2x_main.c
@@ -10606,7 +10606,7 @@
 	return 0;
 }
 
-static struct ethtool_ops bnx2x_ethtool_ops = {
+static const struct ethtool_ops bnx2x_ethtool_ops = {
 	.get_settings		= bnx2x_get_settings,
 	.set_settings		= bnx2x_set_settings,
 	.get_drvinfo		= bnx2x_get_drvinfo,