staging: hv: Enable sending GARP packet after live migration

The hv_netvsc gets RNDIS_STATUS_MEDIA_CONNECT event after the VM
is live migrated. Adding call to netif_notify_peers() for this event
to send GARP (Gratuitous ARP) to notify network peers. Otherwise,
the VM's network connection may stop after a live migration.

This patch should also be applied to stable kernel 2.6.32 and later.

Signed-off-by: Haiyang Zhang <[e-mail]>
Signed-off-by: Hank Janssen <[e-mail]>
Cc: stable <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/staging/hv/netvsc_drv.c

···
 	if (status == 1) {
 		netif_carrier_on(net);
 		netif_wake_queue(net);
+		netif_notify_peers(net);
 	} else {
 		netif_carrier_off(net);
 		netif_stop_queue(net);