Windows: Add PCI vendor and device identifier detection

The PCI identifiers are different to the USB identifiers, as in:

* USB: VID_, PID_
* PCI: VEN_, DEV_

For more info see MSDN:

* USB: http://msdn.microsoft.com/en-us/library/windows/hardware/ff553356%28v=vs.85%29.aspx
* PCI: http://msdn.microsoft.com/en-us/library/windows/hardware/ff546262%28v=vs.85%29.aspx

Therefore, the method availablePorts() skipped processing of PCI prefixes.

Now, problem was resolved.

Task-number: QTBUG-32018
Change-Id: I098a35a170043b9c58b74cb278e4daff34b1f84e
Reviewed-by: Laszlo Papp <lpapp@kde.org>
Reviewed-by: Sergey Belyashov <Sergey.Belyashov@gmail.com>