[PATCH v3 13/26] ArmPkg: Fix Ecc error 6001 in MmCommunicationDxe

["PierreGondois" <pierre.gondois@arm.com>]

From: Pierre Gondois <Pierre.Gondois@arm.com>

This patch fixes the following Ecc reported error:
All include file contents should be guarded by
a #ifndef statement.

This patch replaces a "#if !defined [...]" statement
by a "#ifndef [...]" statement, preventing Ecc to
throw an error.

Edk2 coding standard stating that:
"Names starting with one or two underscores, such as
_MACRO_GUARD_FILE_NAME_H_, must not be used."
the include guard is also updated.

Ref:
https://edk2-docs.gitbook.io/edk-ii-c-coding-standards-specification/
5_source_files/53_include_files#
5-3-5-all-include-file-contents-must-be-protected-by-a-include-guard

Signed-off-by: Pierre Gondois <Pierre.Gondois@arm.com>
Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
---
The changes can be seen at: https://github.com/PierreARM/edk2/tree/1552_Ecc_ArmPkg_BIS_v3

 ArmPkg/Drivers/MmCommunicationDxe/MmCommunicate.h | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/ArmPkg/Drivers/MmCommunicationDxe/MmCommunicate.h b/ArmPkg/Drivers/MmCommunicationDxe/MmCommunicate.h
index fcc346ba7e3e..32753947e1cb 100644
--- a/ArmPkg/Drivers/MmCommunicationDxe/MmCommunicate.h
+++ b/ArmPkg/Drivers/MmCommunicationDxe/MmCommunicate.h
@@ -1,13 +1,13 @@
 /** @file
 
-  Copyright (c) 2016-2018, ARM Limited. All rights reserved.
+  Copyright (c) 2016-2021, Arm Limited. All rights reserved.<BR>
 
   SPDX-License-Identifier: BSD-2-Clause-Patent
 
 **/
 
-#if !defined _MM_COMMUNICATE_H_
-#define _MM_COMMUNICATE_H_
+#ifndef MM_COMMUNICATE_H_
+#define MM_COMMUNICATE_H_
 
 #define MM_MAJOR_VER_MASK        0xEFFF0000
 #define MM_MINOR_VER_MASK        0x0000FFFF
@@ -19,4 +19,4 @@
 #define MM_CALLER_MAJOR_VER      0x1UL
 #define MM_CALLER_MINOR_VER      0x0
 
-#endif /* _MM_COMMUNICATE_H_ */
+#endif /* MM_COMMUNICATE_H_ */
-- 
2.17.1