bnx2x: advertise transmit time stamping

This driver now offers software transmit time stamping, so it should
advertise that fact via ethtool. Compile tested only.

Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Cc: Eilon Greenstein <eilong@broadcom.com>
Cc: Willem de Bruijn <willemb@google.com>
Acked-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/broadcom/bnx2x/bnx2x_ethtool.c

@@ -2978,6 +2978,7 @@ static const struct ethtool_ops bnx2x_ethtool_ops = {
 	.get_module_eeprom	= bnx2x_get_module_eeprom,
 	.get_eee		= bnx2x_get_eee,
 	.set_eee		= bnx2x_set_eee,
+	.get_ts_info		= ethtool_op_get_ts_info,
 };
 
 void bnx2x_set_ethtool_ops(struct net_device *netdev)