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/PeiPciLibPciCfg2/PciLib.c

@@ -1,13 +1,13 @@
 /** @file
   PCI Library using PCI CFG2 PPI.
 
-  Copyright (c) 2007 - 2012, 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 which accompanies this distribution.  The full
   text of the license may be found at
   http://opensource.org/licenses/bsd-license.php.
-  
+
   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 
@@ -129,19 +129,19 @@ PeiPciLibPciCfg2WriteWorker (
 }
 
 /**
-  Registers a PCI device so PCI configuration registers may be accessed after 
+  Registers a PCI device so PCI configuration registers may be accessed after
   SetVirtualAddressMap().
-  
-  Registers the PCI device specified by Address so all the PCI configuration registers 
+
+  Registers the PCI device specified by Address so all the PCI configuration registers
   associated with that PCI device may be accessed after SetVirtualAddressMap() is called.
-  
+
   If Address > 0x0FFFFFFF, then ASSERT().
 
   @param  Address The address that encodes the PCI Bus, Device, Function and
                   Register.
-  
+
   @retval RETURN_SUCCESS           The PCI device was registered for runtime access.
-  @retval RETURN_UNSUPPORTED       An attempt was made to call this function 
+  @retval RETURN_UNSUPPORTED       An attempt was made to call this function
                                    after ExitBootServices().
   @retval RETURN_UNSUPPORTED       The resources required to access the PCI device
                                    at runtime could not be mapped.