b44: Disable device on shutdown

Disable the SSB core on device shutdown.
This has two advantages:
1) A clean device shutdown is always desired here, because we disable
  the device's global crystal in the next statement.
2) This fixes a bug where the device will come up with the enable-bit
  set on the next initialization (without a reboot inbetween).
  This causes breakage on the second initialization due to code that
  checks this bit (ssb_device_is_enabled() checks).

Reported-by: Pantelis Koukousoulas <pktoss@gmail.com>
Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/b44.c

@@ -2240,6 +2240,7 @@ static void __devexit b44_remove_one(struct ssb_device *sdev)
 	struct net_device *dev = ssb_get_drvdata(sdev);
 
 	unregister_netdev(dev);
+	ssb_device_disable(sdev, 0);
 	ssb_bus_may_powerdown(sdev->bus);
 	free_netdev(dev);
 	ssb_pcihost_set_power_state(sdev, PCI_D3hot);