Revert "MdeModulePkg: Remove EmuVariableRuntimeDxe"

This reverts commit 4a7aa8d34a.

MdeModulePkg/Universal/Variable/EmuRuntimeDxe/EmuVariableRuntimeDxe.inf

@@ -0,0 +1,88 @@
+## @file
+# Emulation Variable for EFI_RUNTIME_SERVICES.
+#
+# This module installs variable arch protocol and variable write arch protocol to provide
+# four EFI_RUNTIME_SERVICES: SetVariable, GetVariable, GetNextVariableName and QueryVariableInfo.
+#
+# Copyright (c) 2006 - 2018, 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                      = EmuVariableRuntimeDxe
+  MODULE_UNI_FILE                = EmuVariableRuntimeDxe.uni
+  FILE_GUID                      = 02B01AD5-7E59-43e8-A6D8-238180613A5A
+  MODULE_TYPE                    = DXE_RUNTIME_DRIVER
+  VERSION_STRING                 = 1.0
+  ENTRY_POINT                    = VariableServiceInitialize
+
+#
+# The following information is for reference only and not required by the build tools.
+#
+#  VALID_ARCHITECTURES           = IA32 X64 EBC
+#
+
+[Sources]
+  InitVariable.c
+  EmuVariable.c
+  Variable.h
+
+
+[Packages]
+  MdePkg/MdePkg.dec
+  MdeModulePkg/MdeModulePkg.dec
+
+
+[LibraryClasses]
+  BaseLib
+  UefiLib
+  UefiBootServicesTableLib
+  UefiDriverEntryPoint
+  UefiRuntimeLib
+  DebugLib
+  MemoryAllocationLib
+  BaseMemoryLib
+  HobLib
+  PcdLib
+
+[Protocols]
+  gEfiVariableArchProtocolGuid                  ## PRODUCES
+  gEfiVariableWriteArchProtocolGuid             ## PRODUCES
+
+[Guids]
+  gEfiEventVirtualAddressChangeGuid             ## CONSUMES             ## Event
+  ## SOMETIMES_CONSUMES   ## Variable:L"PlatformLang"
+  ## SOMETIMES_PRODUCES   ## Variable:L"PlatformLang"
+  ## SOMETIMES_CONSUMES   ## Variable:L"Lang"
+  ## SOMETIMES_PRODUCES   ## Variable:L"Lang"
+  gEfiGlobalVariableGuid
+  ## PRODUCES             ## GUID # Signature of Variable store header
+  ## CONSUMES             ## GUID # Signature of Variable store header
+  ## SOMETIMES_CONSUMES   ## HOB
+  ## SOMETIMES_PRODUCES   ## SystemTable
+  gEfiVariableGuid
+
+[Pcd]
+  gEfiMdeModulePkgTokenSpaceGuid.PcdEmuVariableNvStoreReserved      ## CONSUMES
+  gEfiMdeModulePkgTokenSpaceGuid.PcdMaxVariableSize                 ## CONSUMES
+  gEfiMdeModulePkgTokenSpaceGuid.PcdMaxHardwareErrorVariableSize    ## CONSUMES
+  gEfiMdeModulePkgTokenSpaceGuid.PcdVariableStoreSize               ## CONSUMES
+  gEfiMdeModulePkgTokenSpaceGuid.PcdHwErrStorageSize                ## CONSUMES
+
+[FeaturePcd]
+  gEfiMdeModulePkgTokenSpaceGuid.PcdVariableCollectStatistics   ## CONSUMES # statistic the information of variable.
+
+[Depex]
+  TRUE
+
+[UserExtensions.TianoCore."ExtraFiles"]
+  EmuVariableRuntimeDxeExtra.uni