1) Fix a typo in EhcMoniteAsyncRequests.

2) Code cleanup.
3) Doxygen comment cleanup.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@7428 6f19259b-4bc3-4df7-8a09-765794883524

MdeModulePkg/Bus/Pci/EhciDxe/EhciReg.h

@@ -2,7 +2,7 @@
 
   This file contains the definination for host controller register operation routines.
 
-Copyright (c) 2007, Intel Corporation
+Copyright (c) 2007 - 2009, Intel Corporation
 All rights reserved. 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
@@ -154,8 +154,6 @@ EhcReadOpReg (
   @param  Offset   EHCI operation register offset.
   @param  Data     The data to write.
 
-  @return None.
-
 **/
 VOID
 EhcWriteOpReg (
@@ -171,8 +169,6 @@ EhcWriteOpReg (
 
   @param  Ehc      The EHCI device.
 
-  @return None.
-
 **/
 VOID
 EhcClearLegacySupport (
@@ -204,8 +200,6 @@ EhcSetAndWaitDoorBell (
 
   @param  Ehc      The EHCI device.
 
-  @return None.
-
 **/
 VOID
 EhcAckAllInterrupt (