netdevice wanrouter: Convert directly reference of netdev->priv

1. Make device driver to allocate memory for netdev.
2. Convert all directly reference of netdev->priv to netdev_priv().

Signed-off-by: Wang Chen <wangchen@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 files changed