net: cxgb3: Use net_device_stats from struct net_device

Instead of using a private copy of struct net_device_stats in
struct port_info, use stats from struct net_device.

Cc: Santosh Raspatur <santosh@chelsio.com>
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/chelsio/cxgb3/adapter.h

@@ -72,7 +72,6 @@ struct port_info {
 	struct cphy phy;
 	struct cmac mac;
 	struct link_config link_config;
-	struct net_device_stats netstats;
 	int activity;
 	__be32 iscsi_ipv4addr;
 	struct iscsi_config iscsic;

drivers/net/ethernet/chelsio/cxgb3/cxgb3_main.c

@@ -1489,7 +1489,7 @@ static struct net_device_stats *cxgb_get_stats(struct net_device *dev)
 {
 	struct port_info *pi = netdev_priv(dev);
 	struct adapter *adapter = pi->adapter;
-	struct net_device_stats *ns = &pi->netstats;
+	struct net_device_stats *ns = &dev->stats;
 	const struct mac_stats *pstats;
 
 	spin_lock(&adapter->stats_lock);