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/EhciUrb.c

@@ -3,7 +3,7 @@
     This file contains URB request, each request is warpped in a
     URB (Usb Request Block).
 
-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
@@ -125,8 +125,6 @@ EhcCreateQtd (
   @param  Ep                    The queue head's related endpoint.
   @param  QhHw                  The queue head to initialize.
 
-  @return None.
-
 **/
 VOID
 EhcInitIntQh (
@@ -293,8 +291,6 @@ EhcConvertPollRate (
   @param  Ehc                   The EHCI device.
   @param  Qtds                  The list head of the QTD.
 
-  @return None.
-
 **/
 VOID
 EhcFreeQtds (
@@ -321,8 +317,6 @@ EhcFreeQtds (
   @param  Ehc                   The EHCI device.
   @param  Urb                   The URB to free.
 
-  @return None.
-
 **/
 VOID
 EhcFreeUrb (