ShellPkg/[hex]edit: use SimpleTextInEx to read console

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=682

Edit and HexEdit commands assume that SimpleTxtIn translates
Ctrl+<Alpha-Key> key combinations into Unicode control characters
(0x1-0x1A).

Such translation does not seem to be required by the UEFI spec.
Shell should not rely on implementation specific behavior.
It should instead use SimpleTextInEx to read Ctrl+<Alpha-Key> key
combinations.

The patch changes edit and hexedit to only consumes SimpleTextInEx
so that the implementation specific behavior dependency is removed.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com>
Reported-by: Felix <felixp@mail.ru>
Cc: Felix <felixp@mail.ru>
Reviewed-by: Jaben Carsey <jaben.carsey@intel.com>

ShellPkg/Library/UefiShellDebug1CommandsLib/EditInputBar.h

@@ -1,7 +1,7 @@
 /** @file
   Declares imputbar interface functions.
 
-  Copyright (c) 2005 - 2011, Intel Corporation. All rights reserved. <BR>
+  Copyright (c) 2005 - 2018, 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
@@ -17,10 +17,12 @@
 
 /**
   Initialize the input bar.
+
+  @param[in] TextInEx  Pointer to SimpleTextInEx instance in System Table.
 **/
 VOID
 InputBarInit (
-  VOID
+  IN EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *TextInEx
   );
 
 /**