Test: fix secure test client partition

This change is necessary to execute test cases in the secure
test client partition in case of TFM_LVL==3:
 - rename files in test/framework folder, prefix was added
 - add missing files to test client partition in linker scripts
 - add execution region for secure test client partition in
   Musca A1 linker config file
 - update affected files due to renaming

Change-Id: If9605ad65daf4341d3e520ae69ba4d9d7f31415c
Signed-off-by: Tamas Ban <tamas.ban@arm.com>
diff --git a/test/framework/test_framework.c b/test/framework/test_framework.c
index fcb7451..e991dd4 100644
--- a/test/framework/test_framework.c
+++ b/test/framework/test_framework.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017, Arm Limited. All rights reserved.
+ * Copyright (c) 2017-2018, Arm Limited. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  *
@@ -12,8 +12,6 @@
 #include <stdlib.h>
 #include <string.h>
 
-#include "helpers.h"
-
 static void test_failed(const struct test_result_t *ret)
 {
     printf_set_color(RED);