sky2: reboot fix

The call to napi_disable() in the PCI shutdown handler is problematic,
and is aggravated by the new NAPI.
Also, make sure watchdog timer doesn't go off.
Signed-off-by: NStephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

drivers/net/sky2.c

@@ -4396,7 +4396,7 @@ static void sky2_shutdown(struct pci_dev *pdev)
 	if (!hw)
 		return;
 
-	napi_disable(&hw->napi);
+	del_timer_sync(&hw->watchdog_timer);
 
 	for (i = 0; i < hw->ports; i++) {
 		struct net_device *dev = hw->dev[i];