Fix the issue that consplitter should not touch ConIn variable & do ConIn connection

Signed-off-by: Chao Zhang <chao.b.zhang@intel.com>
Reviewed-by  : Hot Tian <hot.tian@intel.com>
Reviewed-by  : Ni, Ruiyu <ruiyu.ni@intel.com>

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13645 6f19259b-4bc3-4df7-8a09-765794883524

MdeModulePkg/Include/Guid/ConnectConInEvent.h

@@ -0,0 +1,24 @@
+/** @file
+  GUID is the name of events used with CreateEventEx in order to be notified
+  when the requires ConIn connection.
+
+  Copyright (c) 2012, 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.
+
+**/
+
+#ifndef __CONNECT_CONIN_EVENT_GUID_H__
+#define __CONNECT_CONIN_EVENT_GUID_H__
+
+#define CONNECT_CONIN_EVENT_GUID \
+    { 0xdb4e8151, 0x57ed, 0x4bed, { 0x88, 0x33, 0x67, 0x51, 0xb5, 0xd1, 0xa8, 0xd7 }}
+
+extern EFI_GUID gConnectConInEventGuid;
+
+#endif