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/Universal/Console/TerminalDxe/Terminal.h

@@ -20,6 +20,7 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 
 #include <Guid/GlobalVariable.h>
 #include <Guid/PcAnsi.h>
+#include <Guid/TtyTerm.h>
 #include <Guid/StatusCodeDataTypeVariable.h>
 
 #include <Protocol/SimpleTextOut.h>
@@ -136,6 +137,7 @@ typedef union {
 #define VT100TYPE                 1
 #define VT100PLUSTYPE             2
 #define VTUTF8TYPE                3
+#define TTYTERMTYPE               4
 
 #define LEFTOPENBRACKET           0x5b  // '['
 #define ACAP                      0x41