ArmPlatformPkg: add Null implementation of NorFlashPlatformLib

In order to be able to build ArmPlatformPkg components outside of
the context of a particular platform, add Null implementation of
NorFlashPlatformLib.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>

ArmPlatformPkg/Library/NorFlashPlatformNullLib/NorFlashPlatformNullLib.c

@@ -0,0 +1,34 @@
+/** @file
+
+ Copyright (c) 2014, Linaro Ltd. 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.
+
+ **/
+
+#include <Library/NorFlashPlatformLib.h>
+
+EFI_STATUS
+NorFlashPlatformInitialization (
+  VOID
+  )
+{
+  return EFI_SUCCESS;
+}
+
+EFI_STATUS
+NorFlashPlatformGetDevices (
+  OUT NOR_FLASH_DESCRIPTION   **NorFlashDescriptions,
+  OUT UINT32                  *Count
+  )
+{
+  *NorFlashDescriptions = NULL;
+  *Count = 0;
+  return EFI_SUCCESS;
+}

ArmPlatformPkg/Library/NorFlashPlatformNullLib/NorFlashPlatformNullLib.inf

@@ -0,0 +1,30 @@
+#/** @file
+#
+#  Component description file for NorFlashPlatformNullLib module
+#
+#  Copyright (c) 2017, Linaro Ltd. 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                      = NorFlashPlatformNullLib
+  FILE_GUID                      = 29b733ad-d066-4df6-8a89-b9df1beb818a
+  MODULE_TYPE                    = DXE_DRIVER
+  VERSION_STRING                 = 1.0
+  LIBRARY_CLASS                  = NorFlashPlatformLib
+
+[Sources.common]
+  NorFlashPlatformNullLib.c
+
+[Packages]
+  MdePkg/MdePkg.dec
+  ArmPlatformPkg/ArmPlatformPkg.dec