[PATCH 5/5] MdePkg/LegacySpiSmmFlash.h: Add the missing SpiSmmIo header.

["Marvin Häuser" <Marvin.Haeuser@outlook.com>]

Add the missing header for the SPI SMM IO protocol.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Marvin Haeuser <Marvin.Haeuser@outlook.com>
---
 MdePkg/Include/Protocol/SpiSmmIo.h | 25 ++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/MdePkg/Include/Protocol/SpiSmmIo.h b/MdePkg/Include/Protocol/SpiSmmIo.h
new file mode 100644
index 000000000000..de6f8d8e31cc
--- /dev/null
+++ b/MdePkg/Include/Protocol/SpiSmmIo.h
@@ -0,0 +1,25 @@
+/** @file
+  This file defines the SPI SMM IO Protocol.
+
+  Copyright (c) 2018, 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 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.
+
+  @par Revision Reference:
+    This Protocol was introduced in UEFI PI Specification 1.6.
+
+**/
+
+#ifndef __SPI_SMM_IO_PROTOCOL_H__
+#define __SPI_SMM_IO_PROTOCOL_H__
+
+#include <Protocol/SpiIo.h>
+
+typedef struct _EFI_SPI_IO_PROTOCOL EFI_SPI_SMM_IO_PROTOCOL;
+
+#endif // __SPI_SMM_IO_PROTOCOL_H__
-- 
2.16.0.windows.2