In order for network device lifetime stuff to work properly, it is necessary
for devices to allocate private data as part of alloc_etherdev.
Also, netdev_priv() is improvement over dereferencing netdev->priv
Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>