MdeModulePkg: Add new driver to publish EDKII_PI_SMM_COMMUNICATION_REGION_TABLE.

Add a driver to publish EDKII_PI_SMM_COMMUNICATION_REGION_TABLE, so that
other DXE driver can consume this table directly. NOTE: This is sample driver.
A platform may uses its own way to define default SMM communication buffer
region and publish information in its own
EDKII_PI_SMM_COMMUNICATION_REGION_TABLE.

This is designed to meet Microsoft WSMT table definition on FIXED_COMM_BUFFERS
requirement.

Cc: Feng Tian <feng.tian@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jiewen Yao <jiewen.yao@intel.com>
Reviewed-by: Feng, Tian <feng.tian@intel.com>

MdeModulePkg/Universal/SmmCommunicationBufferDxe/SmmCommunicationBufferExtraDxe.uni

@@ -0,0 +1,18 @@
+// /** @file
+// SmmCommunicationBuffer Localized Strings and Content
+//
+// Copyright (c) 2016, 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.
+//
+// **/
+
+#string STR_PROPERTIES_MODULE_NAME
+#language en-US
+"SMM Communication Buffer DXE Driver"