Adapt psasim

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
diff --git a/tests/psa-client-server/psasim/include/util.h b/tests/psa-client-server/psasim/include/util.h
index 5eb8238..bbff3ca 100644
--- a/tests/psa-client-server/psasim/include/util.h
+++ b/tests/psa-client-server/psasim/include/util.h
@@ -28,4 +28,4 @@
 
 #define PROJECT_ID              'M'
 #define PATHNAMESIZE            256
-#define TMP_FILE_BASE_PATH      "./"
+#define TMP_FILE_BASE_PATH      "/tmp/"