StandaloneMmPkg: Add CPU driver suitable for ARM Platforms.

This patch adds a simple CPU driver that exports the
EFI_MM_CONFIGURATION_PROTOCOL to allow registration of the Standalone
MM Foundation entry point. It preserves the existing notification
mechanism for the configuration protocol.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Sughosh Ganu <sughosh.ganu@arm.com>
Signed-off-by: Achin Gupta <achin.gupta@arm.com>
Signed-off-by: Supreeth Venkatesh <supreeth.venkatesh@arm.com>
Reviewed-by: Achin Gupta <achin.gupta@arm.com>

StandaloneMmPkg/Drivers/StandaloneMmCpu/AArch64/StandaloneMmCpu.inf

@@ -0,0 +1,59 @@
+#/** @file
+#
+#  Standalone MM CPU driver for ARM Standard Platforms
+#
+#  Copyright (c) 2009, Apple Inc. All rights reserved.<BR>
+#  Copyright (c) 2016 HP Development Company, L.P.
+#  Copyright (c) 2017 - 2018, ARM Limited. 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                    = 0x0001001A
+  BASE_NAME                      = StandloneMmCpu
+  FILE_GUID                      = 58F7A62B-6280-42A7-BC38-10535A64A92C
+  MODULE_TYPE                    = MM_STANDALONE
+  VERSION_STRING                 = 1.0
+  PI_SPECIFICATION_VERSION       = 0x00010032
+  ENTRY_POINT                    = StandloneMmCpuInitialize
+
+[Sources]
+  StandaloneMmCpu.c
+  EventHandle.c
+
+[Packages]
+  ArmPkg/ArmPkg.dec
+  MdePkg/MdePkg.dec
+  MdeModulePkg/MdeModulePkg.dec
+  StandaloneMmPkg/StandaloneMmPkg.dec
+
+[LibraryClasses]
+  ArmLib
+  ArmSvcLib
+  BaseMemoryLib
+  DebugLib
+  HobLib
+  StandaloneMmDriverEntryPoint
+
+[Protocols]
+  gEfiMmConfigurationProtocolGuid                        # PROTOCOL ALWAYS_PRODUCED
+  gEfiMmCpuProtocolGuid                                  # PROTOCOL ALWAYS_PRODUCED
+
+[Guids]
+  gEfiHobListGuid
+  gEfiMmPeiMmramMemoryReserveGuid
+  gZeroGuid
+  gMpInformationHobGuid
+  gEfiStandaloneMmNonSecureBufferGuid
+  gEfiArmTfCpuDriverEpDescriptorGuid
+
+[Depex]
+  TRUE