Add a DMA lib that works like PCI_IO protocl. Add a NULL version that would work with Intel (DMA is coherent no matter what you do).

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10551 6f19259b-4bc3-4df7-8a09-765794883524

EmbeddedPkg/Library/NullDmaLib/NullDmaLib.inf

@@ -0,0 +1,41 @@
+#/** @file
+#  
+#  Copyright (c) 2008 - 2010, Apple Inc. 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.
+#  
+#**/
+
+[Defines]
+  INF_VERSION                    = 0x00010005
+  BASE_NAME                      = NullDmaLib
+  FILE_GUID                      = 0F2A0816-D319-4ee7-A6B8-D58524E4428F
+  MODULE_TYPE                    = BASE
+  VERSION_STRING                 = 1.0
+  LIBRARY_CLASS                  = DmaLib 
+
+[Sources.common]
+  NullDmaLib.c
+
+[Packages]
+  MdePkg/MdePkg.dec
+  EmbeddedPkg/EmbeddedPkg.dec
+
+[LibraryClasses]
+  DebugLib
+  MemoryAllocationLib
+  
+  
+[Protocols]
+  
+[Guids]
+ 
+[Pcd]
+
+[Depex]
+  TRUE