sfc: Replace net_dev->priv with netdev_priv(net_dev)

Use of the net_device::priv field is deprecated.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
diff --git a/drivers/net/sfc/falcon.c b/drivers/net/sfc/falcon.c
index 9138ee5..c7aa2f6 100644
--- a/drivers/net/sfc/falcon.c
+++ b/drivers/net/sfc/falcon.c
@@ -1951,7 +1951,7 @@
 static void falcon_mdio_write(struct net_device *net_dev, int phy_id,
 			      int addr, int value)
 {
-	struct efx_nic *efx = net_dev->priv;
+	struct efx_nic *efx = netdev_priv(net_dev);
 	unsigned int phy_id2 = phy_id & FALCON_PHY_ID_ID_MASK;
 	efx_oword_t reg;
 
@@ -2019,7 +2019,7 @@
  * could be read, -1 will be returned. */
 static int falcon_mdio_read(struct net_device *net_dev, int phy_id, int addr)
 {
-	struct efx_nic *efx = net_dev->priv;
+	struct efx_nic *efx = netdev_priv(net_dev);
 	unsigned int phy_addr = phy_id & FALCON_PHY_ID_ID_MASK;
 	efx_oword_t reg;
 	int value = -1;