Add suppport for ARM CM55 (#494)

* Add supposrt for ARM CM55

* Fix file header

* Remove duplicate code

* Refactor portmacro.h

1. portmacro.h is re-factored into 2 parts - portmacrocommon.h which is
   common to all ARMv8-M ports and portmacro.h which is different for
   different compiler and architecture. This enables us to provide
   Cortex-M55 ports without code duplication.
2. Update copy_files.py so that it copies Cortex-M55 ports correctly -
   all files except portmacro.h are used from Cortex-M33 ports.

Signed-off-by: Gaurav Aggarwal <aggarg@amazon.com>

Co-authored-by: Gaurav Aggarwal <aggarg@amazon.com>

portable/IAR/ARM_CM55/non_secure/portmacro.h

@@ -0,0 +1,83 @@
+/*
+ * FreeRTOS Kernel <DEVELOPMENT BRANCH>
+ * Copyright (C) 2021 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+ * the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+ * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * https://www.FreeRTOS.org
+ * https://github.com/FreeRTOS
+ *
+ */
+
+#ifndef PORTMACRO_H
+#define PORTMACRO_H
+
+#ifdef __cplusplus
+    extern "C" {
+#endif
+
+#include "portmacrocommon.h"
+
+/*------------------------------------------------------------------------------
+ * Port specific definitions.
+ *
+ * The settings in this file configure FreeRTOS correctly for the given hardware
+ * and compiler.
+ *
+ * These settings should not be altered.
+ *------------------------------------------------------------------------------
+ */
+
+#ifndef configENABLE_MVE
+    #error configENABLE_MVE must be defined in FreeRTOSConfig.h. Set configENABLE_MVE to 1 to enable the MVE or 0 to disable the MVE.
+#endif /* configENABLE_MVE */
+/*-----------------------------------------------------------*/
+
+/**
+ * Architecture specifics.
+ */
+#define portARCH_NAME                       "Cortex-M55"
+#define portDONT_DISCARD                    __root
+/*-----------------------------------------------------------*/
+
+#if( configTOTAL_MPU_REGIONS == 16 )
+    #error 16 MPU regions are not yet supported for this port.
+#endif
+/*-----------------------------------------------------------*/
+
+/**
+ * @brief Critical section management.
+ */
+#define portDISABLE_INTERRUPTS()            ulSetInterruptMask()
+#define portENABLE_INTERRUPTS()             vClearInterruptMask( 0 )
+/*-----------------------------------------------------------*/
+
+/* Suppress warnings that are generated by the IAR tools, but cannot be fixed in
+ * the source code because to do so would cause other compilers to generate
+ * warnings. */
+#pragma diag_suppress=Be006
+#pragma diag_suppress=Pa082
+/*-----------------------------------------------------------*/
+
+#ifdef __cplusplus
+    }
+#endif
+
+#endif /* PORTMACRO_H */