Add tools for exporting SP memory regions

Create a Python script and CMake functions for parsing the SP ELF file
and exporting the memory region information into the SP manifest file.

Signed-off-by: Imre Kis <imre.kis@arm.com>
Change-Id: I800bc2c85fa11416843b71958a796a7b5321bd2d
diff --git a/tools/python/requirements.txt b/tools/python/requirements.txt
new file mode 100644
index 0000000..81bf605
--- /dev/null
+++ b/tools/python/requirements.txt
@@ -0,0 +1,7 @@
+#
+# Copyright (c) 2022, Arm Limited and Contributors. All rights reserved.
+#
+# SPDX-License-Identifier: BSD-3-Clause
+#
+
+pyelftools==0.28