net: bcm63xx_enet: make bcm_enetsw_ethtool_ops const

Make this const as it is never modified.

Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/broadcom/bcm63xx_enet.c b/drivers/net/ethernet/broadcom/bcm63xx_enet.c
index 61a88b6..4f3845a 100644
--- a/drivers/net/ethernet/broadcom/bcm63xx_enet.c
+++ b/drivers/net/ethernet/broadcom/bcm63xx_enet.c
@@ -2674,7 +2674,7 @@ static int bcm_enetsw_set_ringparam(struct net_device *dev,
 	return 0;
 }
 
-static struct ethtool_ops bcm_enetsw_ethtool_ops = {
+static const struct ethtool_ops bcm_enetsw_ethtool_ops = {
 	.get_strings		= bcm_enetsw_get_strings,
 	.get_sset_count		= bcm_enetsw_get_sset_count,
 	.get_ethtool_stats      = bcm_enetsw_get_ethtool_stats,