More PciScanBus codes now to check saved PCI BIOS config header saved in registry...

More PciScanBus codes now to check saved PCI BIOS config header saved in registry (PciGetBiosConfig, PciSaveBiosConfig) and support load save compare (PcipIsSameDevice) if change in interrupt line
Also for interrupt line use HAL to get parent bus IRQ# if device connected (PciGetAdjustedInterruptLine)
For PCI debug HW PciIsDeviceOnDebugPath to detect, but have not real machine with this kind of device to test
Support PCI_HACK_NO_SUBSYSTEM and PCI_HACK_NO_SUBSYSTEM/REVISION_AFTER_D3 for when compareing
New config function required PciWriteDeviceConfig to update IRQ line from BIOS registry data
Save initial, current Command enables to PDO extension, interrupt data too

svn path=/trunk/; revision=48100