drivers/net: const-ify ethtool_ops declarations

Signed-off-by: Jeff Garzik <jeff@garzik.org>
diff --git a/drivers/net/8139cp.c b/drivers/net/8139cp.c
index 488241c..5ba11fa 100644
--- a/drivers/net/8139cp.c
+++ b/drivers/net/8139cp.c
@@ -1546,7 +1546,7 @@
 	pci_free_consistent(cp->pdev, sizeof(*nic_stats), nic_stats, dma);
 }
 
-static struct ethtool_ops cp_ethtool_ops = {
+static const struct ethtool_ops cp_ethtool_ops = {
 	.get_drvinfo		= cp_get_drvinfo,
 	.get_regs_len		= cp_get_regs_len,
 	.get_stats_count	= cp_get_stats_count,