drivers/net: const-ify ethtool_ops declarations

Signed-off-by: Jeff Garzik <jeff@garzik.org>
diff --git a/drivers/net/au1000_eth.c b/drivers/net/au1000_eth.c
index ec49336..ac33b1b 100644
--- a/drivers/net/au1000_eth.c
+++ b/drivers/net/au1000_eth.c
@@ -608,7 +608,7 @@
 	info->regdump_len = 0;
 }
 
-static struct ethtool_ops au1000_ethtool_ops = {
+static const struct ethtool_ops au1000_ethtool_ops = {
 	.get_settings = au1000_get_settings,
 	.set_settings = au1000_set_settings,
 	.get_drvinfo = au1000_get_drvinfo,