Add "TtyTerm" terminal type to TerminalDxe

This patch a adds new terminal type, TtyTerm, to TerminalDxe.  This terminal
type provides a place to add support for various *nix terminals that don't
behave like standard VT terminals.  The goal is to 'just work' with as many
terminals as possible, rather than properly emulating any one specific
terminal.

Signed-off-by: Roy Franz <roy.franz@linaro.org>
Contributed-under: TianoCore Contribution Agreement 1.0
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Feng Tian <feng.tian@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17895 6f19259b-4bc3-4df7-8a09-765794883524

MdeModulePkg/Include/Guid/TtyTerm.h

@@ -0,0 +1,25 @@
+/** @file
+GUID definition for TtyTerm terminal type.  The TtyTerm terminal aims to
+provide support for modern *nix terminals.
+
+
+Copyright (c) 2015  Linaro Ltd.
+This program and the accompanying materials are licensed and made
+available under the terms and conditions of the BSD License that
+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 __TTYTERM_H__
+#define __TTYTERM_H__
+
+#define EFI_TTY_TERM_GUID    \
+    {0x7d916d80, 0x5bb1, 0x458c, {0xa4, 0x8f, 0xe2, 0x5f, 0xdd, 0x51, 0xef, 0x94 } }
+
+extern EFI_GUID gEfiTtyTermGuid;
+
+#endif