stmmac: Support the get_ts_info ethtool method.

Signed-off-by: NRichard Cochran <richardcochran@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c

@@ -481,6 +481,7 @@ static const struct ethtool_ops stmmac_ethtool_ops = {
 	.get_wol = stmmac_get_wol,
 	.set_wol = stmmac_set_wol,
 	.get_sset_count	= stmmac_get_sset_count,
+	.get_ts_info = ethtool_op_get_ts_info,
 };
 
 void stmmac_set_ethtool_ops(struct net_device *netdev)