Vlv2TbltDevicePkg/FlashDeviceLib: Add DXE flash device lib.

Previous FlashDeviceLib only supports DxeRuntime and Smm.
It cannot be linked with SystemBiosUpdateDxe driver.

So we separate DxeRuntime related code into a standalone file,
and create FlashDeviceLibDxe.inf.

Cc: David Wei <david.wei@intel.com>
Cc: Feng Tian <feng.tian@intel.com>
Cc: Star Zeng <star.zeng@intel.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Cc: Chao Zhang <chao.b.zhang@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jiewen Yao <jiewen.yao@intel.com>
Reviewed-by: David Wei <david.wei@intel.com>

Vlv2TbltDevicePkg/Library/FlashDeviceLib/FlashDeviceLibDxe.c

@@ -0,0 +1,62 @@
+/** @file
+
+  Copyright (c) 2004  - 2016, 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 that 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 <PiDxe.h>
+
+#include <Library/FlashDeviceLib.h>
+#include <Library/DebugLib.h>
+#include <Library/BaseLib.h>
+#include <Library/UefiBootServicesTableLib.h>
+#include <Library/BaseMemoryLib.h>
+#include "SpiChipDefinitions.h"
+
+extern UINTN FlashDeviceBase;
+
+extern EFI_SPI_PROTOCOL *mSpiProtocol;
+
+/**
+  The library constructuor.
+
+  The function does the necessary initialization work for this library
+  instance. Please put all initialization works in it.
+
+  @param[in]  ImageHandle       The firmware allocated handle for the UEFI image.
+  @param[in]  SystemTable       A pointer to the EFI system table.
+
+  @retval     EFI_SUCCESS       The function always return EFI_SUCCESS for now.
+                                It will ASSERT on error for debug version.
+  @retval     EFI_ERROR         Please reference LocateProtocol for error code details.
+
+**/
+EFI_STATUS
+EFIAPI
+LibFvbFlashDeviceSupportInit (
+  IN EFI_HANDLE         ImageHandle,
+  IN EFI_SYSTEM_TABLE   *SystemTable
+  )
+{
+  EFI_STATUS Status;
+  Status = gBS->LocateProtocol (
+                  &gEfiSpiProtocolGuid,
+                  NULL,
+                  (VOID **)&mSpiProtocol
+                  );
+  ASSERT_EFI_ERROR (Status);
+  // There is no need to call Init, because Runtime or SMM FVB already does that.
+  DEBUG((EFI_D_ERROR, "LibFvbFlashDeviceSupportInit - no init\n"));
+  return EFI_SUCCESS;
+}
+