MdePkg: Clean up source files

1. Do not use tab characters
2. No trailing white space in one line
3. All files must end with CRLF

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Liming Gao <liming.gao@intel.com>

MdePkg/Include/Library/HobLib.h

@@ -8,7 +8,7 @@
   allows the PEI phase to pass information to the DXE phase. HOBs are position
   independent and can be relocated easily to different memory locations.
 
-Copyright (c) 2006 - 2017, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2006 - 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
@@ -190,7 +190,7 @@ BuildModuleHob (
   This function builds a HOB that describes a chunk of system memory.
   It can only be invoked during PEI phase;
   for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.
-  
+
   If there is no additional space for HOB creation, then ASSERT().
 
   @param  ResourceType        The type of resource described by this HOB.