hv_netvsc: use consume_skb

hv_netvsc: use consume_skb

BugLink: http://bugs.launchpad.net/bugs/1650059
Packets that are transmitted in normal path should use consume_skb
instead of kfree_skb. This allows for better tracing of packet drops.

Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
(cherry picked from commit 17db4bcef3c3c45b95b3b3d8577f725df1b2c0a0)
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>
Acked-by: Brad Figg <brad.figg@canonical.com>
Acked-by: Seth Forshee <seth.forshee@canonical.com>
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>