Add following library instances to MDE package:

1. DxePciLibPciRootBridgeIo
2. DxePciSegmentLibPciRootBridgeIo
3. PeiPciLibPciCfg2
4. PeiPciSegmentLibPciCfg2
5. UefiPalLib
6. UefiSalLib 

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@6451 6f19259b-4bc3-4df7-8a09-765794883524

MdePkg/Library/PeiPciSegmentLibPciCfg2/PeiPciSegmentLibPciCfg2.inf

@@ -0,0 +1,52 @@
+# @file
+# This driver implements PCI Segment Lib using PCI CFG2 PPI.
+#
+# This library produces the APIs from the PCI Segment Library and
+#  implements these APIs by calling into the EFI_PEI_PCI CFG2 PPI. One or more
+#  EFI_PEI_PCI CFG2 PPIs are typically produced by a chipset specific PEIM.
+#  This library instance should only be used platforms with multiple PCI segments.
+#
+# Copyright (c) 2007 - 2008, Intel Corporation.
+#
+#  All rights reserved. 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                      = PeiPciSegmentLibPciCfg2
+  FILE_GUID                      = 254901AD-7DB7-45f8-93C8-93D579398D9F
+  MODULE_TYPE                    = PEIM
+  VERSION_STRING                 = 1.0
+  LIBRARY_CLASS                  = PciSegmentLib|PEIM
+  EDK_RELEASE_VERSION            = 0x00020000
+  EFI_SPECIFICATION_VERSION      = 0x00020000
+
+
+#
+# The following information is for reference only and not required by the build tools.
+#
+#  VALID_ARCHITECTURES           = IA32 X64 IPF
+#
+
+[Sources.common]
+  PciSegmentLib.c
+
+[Packages]
+  MdePkg/MdePkg.dec
+
+[LibraryClasses]
+  PeiServicesTablePointerLib
+  BaseLib
+  DebugLib
+  PeiServicesLib
+
+[Ppis]
+  gEfiPciCfg2PpiGuid                            # PPI ALWAYS_CONSUMED
+