[PATCH] Missed usb devices on boot

This marks sets change_bits to all ones when bringing up a hub, since
not all hubs seem to send change events for devices that were plugged in
when the hub was reset. 

David Miller confirms this fixes his boot-time lost keyboard/mouse
problem

drivers/usb/core/hub.c

@@ -674,6 +674,7 @@ static int hub_configure(struct usb_hub *hub,
 		hub->indicator [0] = INDICATOR_CYCLE;
 
 	hub_power_on(hub);
+	hub->change_bits[0] = ~0;
 	hub_activate(hub);
 	return 0;