ArmVirtualizationPkg/PciHostBridgeDxe: clone from PcAtChipsetPkg

ArmVirtualizationPkg/PciHostBridgeDxe: clone from PcAtChipsetPkg

MdeModulePkg/Bus/Pci/PciBusDxe depends on
EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL and
EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL. Here we clone the driver that produces
these from PcAtChipsetPkg, with the following immediate changes:

- a new FILE_GUID is generated;

- the assembly-language Ia32 / X64 specific IoFifo "accelerators" are not
  copied, and their client code (which would be dead code anyway) is
  removed;

- UNI files are not copied: they are used in conjunction with the UEFI
  Packaging Tool (UPT), but the driver under ArmVirtualizationPkg will not
  be part of UDK.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Olivier Martin <Olivier.martin@arm.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16895 6f19259b-4bc3-4df7-8a09-765794883524