niu: convert to new ethtool set_phys_id

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/niu.h b/drivers/net/niu.h
index a41fa8e..51e177e 100644
--- a/drivers/net/niu.h
+++ b/drivers/net/niu.h
@@ -3279,6 +3279,7 @@
 	unsigned long			xpcs_off;
 
 	struct timer_list		timer;
+	u64				orig_led_state;
 	const struct niu_phy_ops	*phy_ops;
 	int				phy_addr;