Replace references to Mbed Crypto with Mbed TLS through-out documentation and comments.

Signed-off-by: Fredrik Hesse <fredrik@hesse.se>
diff --git a/scripts/config.py b/scripts/config.py
index ea66cd6..9bf82c9 100755
--- a/scripts/config.py
+++ b/scripts/config.py
@@ -468,7 +468,7 @@
     def main():
         """Command line config.h manipulation tool."""
         parser = argparse.ArgumentParser(description="""
-        Mbed TLS and Mbed TLS configuration file manipulation tool.
+        Mbed TLS configuration file manipulation tool.
         """)
         parser.add_argument('--file', '-f',
                             help="""File to read (and modify if requested).