patman: Import 'configparser' lower case to be python 3.x safe

In python 3.x module names used in import statements are case sensitive,
and the configparser module is named in all lower-case. Import it as such
in order to avoid errors when running with python 3.x.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Acked-by: Simon Glass <sjg@chromium.org>

tools/patman/settings.py

@@ -5,7 +5,11 @@
 
 from __future__ import print_function
 
-import ConfigParser
+try:
+    import configparser as ConfigParser
+except:
+    import ConfigParser
+
 import os
 import re