MdeModulePkg: 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>
Reviewed-by: Star Zeng <star.zeng@intel.com>

MdeModulePkg/Universal/DisplayEngineDxe/DisplayEngineDxe.inf

@@ -1,7 +1,7 @@
 ## @file
 # The DXE driver produces FORM DISPLAY ENGIEN protocol.
 #
-# Copyright (c) 2007 - 2017, Intel Corporation. All rights reserved.<BR>
+# Copyright (c) 2007 - 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
@@ -36,11 +36,11 @@
   ProcessOptions.c
   InputHandler.c
   Popup.c
-  
+
 [Packages]
   MdePkg/MdePkg.dec
   MdeModulePkg/MdeModulePkg.dec
-  
+
 [LibraryClasses]
   UefiDriverEntryPoint
   UefiBootServicesTableLib
@@ -59,7 +59,7 @@
 
 [Depex]
   gEfiHiiDatabaseProtocolGuid AND gEfiHiiConfigRoutingProtocolGuid AND gEdkiiFormBrowserEx2ProtocolGuid
-  
+
 [FeaturePcd]
   gEfiMdeModulePkgTokenSpaceGuid.PcdBrowserGrayOutTextStatement     ## CONSUMES
   gEfiMdeModulePkgTokenSpaceGuid.PcdBrowerGrayOutReadOnlyMenu       ## CONSUMES