Test/App: Add the original test and app codes from tf-m

The version of the tf-m is:
ac9ccf207e153726b8dc1f5569f702f56d94297f

Change-Id: I445ada360540da55bbe74b3e7aa8d622e8fda501
Signed-off-by: Kevin Peng <kevin.peng@arm.com>
diff --git a/app/psa_api_test.h b/app/psa_api_test.h
new file mode 100644
index 0000000..5423b15
--- /dev/null
+++ b/app/psa_api_test.h
@@ -0,0 +1,25 @@
+/*
+ * Copyright (c) 2019, Arm Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ */
+
+#ifndef __PSA_API_TEST_H__
+#define __PSA_API_TEST_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * \brief Main test application for the PSA API compliance tests
+ *
+ */
+void psa_api_test(void *arg);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __PSA_API_TEST_H__ */