patman: Convert camel case in get_maintainer.py

Convert this file to snake case and update all files which use it.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/tools/patman/get_maintainer.py b/tools/patman/get_maintainer.py
index 98ab82f..e1d15ff 100644
--- a/tools/patman/get_maintainer.py
+++ b/tools/patman/get_maintainer.py
@@ -6,7 +6,7 @@
 
 from patman import command
 
-def FindGetMaintainer(try_list):
+def find_get_maintainer(try_list):
     """Look for the get_maintainer.pl script.
 
     Args:
@@ -23,7 +23,7 @@
 
     return None
 
-def GetMaintainer(dir_list, fname, verbose=False):
+def get_maintainer(dir_list, fname, verbose=False):
     """Run get_maintainer.pl on a file if we find it.
 
     We look for get_maintainer.pl in the 'scripts' directory at the top of
@@ -37,7 +37,7 @@
     Returns:
         A list of email addresses to CC to.
     """
-    get_maintainer = FindGetMaintainer(dir_list)
+    get_maintainer = find_get_maintainer(dir_list)
     if not get_maintainer:
         if verbose:
             print("WARNING: Couldn't find get_maintainer.pl")