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/Library/BaseLib/DivS64x64Remainder.c

@@ -1,7 +1,7 @@
 /** @file
   Math worker functions.
 
-  Copyright (c) 2006 - 2008, 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
@@ -27,7 +27,7 @@
   function returns the 64-bit signed quotient.
 
   It is the caller's responsibility to not call this function with a Divisor of 0.
-  If Divisor is 0, then the quotient and remainder should be assumed to be 
+  If Divisor is 0, then the quotient and remainder should be assumed to be
   the largest negative integer.
 
   If Divisor is 0, then ASSERT().