[USBEHCI_NEW]

[USBEHCI_NEW]
- Add reference count when the hub controller is created. Necessary to prevent the controller from getting deleted when the hub driver performs interface reference removes
- Implement IRP_MN_QUERY_ID, based on mjmartin ehci driver
- Fix bug in IRP_MN_QUERY_BUS_INFORMATION, it is supposed to return a PNP_BUS_INFORMATION not a simple guid
- Implement IOCTL_INTERNAL_USB_GET_DEVICE_HANDLE, IOCTL_INTERNAL_USB_GET_ROOTHUB_PDO, IOCTL_INTERNAL_USB_GET_HUB_COUNT based on mjmartin ehci driver
- Add interfaces for communicating with the hub driver
- Dispatch internal device requests not wmi requests (EHCI_Dispatch)

svn path=/branches/usb-bringup/; revision=51368