um: Kill directly reference of netdev->priv

Simply replace netdev->priv with netdev_priv().

Signed-off-by: Wang Chen <wangchen@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/arch/um/drivers/vde_kern.c b/arch/um/drivers/vde_kern.c
index add7e72..1b852bf 100644
--- a/arch/um/drivers/vde_kern.c
+++ b/arch/um/drivers/vde_kern.c
@@ -19,7 +19,7 @@
 	struct uml_net_private *pri;
 	struct vde_data *vpri;
 
-	pri = dev->priv;
+	pri = netdev_priv(dev);
 	vpri = (struct vde_data *) pri->user;
 
 	vpri->vde_switch = init->vde_switch;