hv_netvsc: pass struct net_device to rndis_filter_set_device_mac()

hv_netvsc: pass struct net_device to rndis_filter_set_device_mac()

BugLink: http://bugs.launchpad.net/bugs/1616677
We unpack 'struct net_device' in netvsc_set_mac_addr() to get to
'struct hv_device' pointer which we use in rndis_filter_set_device_mac()
to get back to 'struct net_device'.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
(cherry picked from commit e834da9a40edd3117ef0a9b2a73d845fe6b622a8)
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>
Acked-by: Brad Figg <brad.figg@canonical.com>
Acked-by: Kamal Mostafa <kamal@canonical.com>