OvmfPkg: clone PciHostBridgeDxe from PcAtChipsetPkg

The source code is copied verbatim, with the following two exceptions:
- the UNI files are dropped, together with the corresponding UNI
  references in the INF file,
- the INF file receives a new FILE_GUID.

The OVMF DSC and FDF files are at once flipped to the cloned driver.

Cc: Jordan Justen <jordan.l.justen@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Regression-tested-by: Gabriel Somlo <somlo@cmu.edu>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17951 6f19259b-4bc3-4df7-8a09-765794883524

OvmfPkg/PciHostBridgeDxe/PciHostBridgeDxe.inf

@@ -0,0 +1,64 @@
+## @file
+#  The basic interfaces implementation to a single segment PCI Host Bridge
+#  driver.
+#
+#  Copyright (c) 2008 - 2014, Intel Corporation. All rights reserved.<BR>
+#
+#  This program and the accompanying materials are licensed and made available
+#  under the terms and conditions of the BSD License which accompanies this
+#  distribution.  The full text of the license may be found at
+#  http://opensource.org/licenses/bsd-license.php
+#
+#  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR
+#  IMPLIED.
+#
+##
+
+[Defines]
+  INF_VERSION                    = 0x00010005
+  BASE_NAME                      = PciHostBridge
+  FILE_GUID                      = 311161C5-BFD9-4504-8016-213F2DAEDAF3
+  MODULE_TYPE                    = DXE_DRIVER
+  VERSION_STRING                 = 1.0
+
+  ENTRY_POINT                    = InitializePciHostBridge
+
+[Packages]
+  MdePkg/MdePkg.dec
+
+[LibraryClasses]
+  UefiDriverEntryPoint
+  UefiBootServicesTableLib
+  DxeServicesTableLib
+  UefiLib
+  MemoryAllocationLib
+  BaseMemoryLib
+  BaseLib
+  DebugLib
+  DevicePathLib
+  IoLib
+  PciLib
+
+[Sources]
+  PciHostBridge.c
+  PciRootBridgeIo.c
+  PciHostBridge.h
+  IoFifo.h
+
+[Sources.IA32]
+  Ia32/IoFifo.asm
+  Ia32/IoFifo.S
+
+[Sources.X64]
+  X64/IoFifo.asm
+  X64/IoFifo.S
+
+[Protocols]
+  gEfiPciHostBridgeResourceAllocationProtocolGuid       ## PRODUCES
+  gEfiPciRootBridgeIoProtocolGuid                       ## PRODUCES
+  gEfiMetronomeArchProtocolGuid                         ## CONSUMES
+  gEfiDevicePathProtocolGuid                            ## PRODUCES
+
+[depex]
+  gEfiMetronomeArchProtocolGuid