MdePkg: add MM_STANDALONE implementation of MmServicesTableLib

The newly introduced generic MmServicesTableLib can be implemented
for traditional SMM (as we did already), but MM_STANDALONE drivers
require an implementation that is based on standalone MM.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Liming Gao <liming.gao@intel.com>

MdePkg/Library/StandaloneMmServicesTableLib/StandaloneMmServicesTableLib.uni

@@ -0,0 +1,20 @@
+// /** @file
+//
+// Standalone MM Services Table Library.
+//
+// Copyright (c) 2009 - 2014, Intel Corporation. All rights reserved.<BR>
+// Copyright (c) 2018, Linaro, Ltd. 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.
+//
+// **/
+
+
+#string STR_MODULE_ABSTRACT             #language en-US "Standalone MM Services Table Library"
+
+#string STR_MODULE_DESCRIPTION          #language en-US "Standalone MM Services Table Library."