patman: Convert camel case in gitutil.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/control.py b/tools/patman/control.py
index a19b171..cea4f3e 100644
--- a/tools/patman/control.py
+++ b/tools/patman/control.py
@@ -18,7 +18,7 @@
 
 def setup():
     """Do required setup before doing anything"""
-    gitutil.Setup()
+    gitutil.setup()
 
 def prepare_patches(col, branch, count, start, end, ignore_binary, signoff):
     """Figure out what patches to generate, then generate them
@@ -45,7 +45,7 @@
     """
     if count == -1:
         # Work out how many patches to send if we can
-        count = (gitutil.CountCommitsToBranch(branch) - start)
+        count = (gitutil.count_commits_to_branch(branch) - start)
 
     if not count:
         str = 'No commits found to process - please use -c flag, or run:\n' \
@@ -55,7 +55,7 @@
     # Read the metadata from the commits
     to_do = count - end
     series = patchstream.get_metadata(branch, start, to_do)
-    cover_fname, patch_files = gitutil.CreatePatches(
+    cover_fname, patch_files = gitutil.create_patches(
         branch, start, to_do, ignore_binary, series, signoff)
 
     # Fix up the patch files to our liking, and insert the cover letter
@@ -138,7 +138,7 @@
     # Email the patches out (giving the user time to check / cancel)
     cmd = ''
     if its_a_go:
-        cmd = gitutil.EmailPatches(
+        cmd = gitutil.email_patches(
             series, cover_fname, patch_files, dry_run, not ignore_bad_tags,
             cc_file, in_reply_to=in_reply_to, thread=thread,
             smtp_server=smtp_server)
@@ -167,7 +167,7 @@
     ok = check_patches(series, patch_files, args.check_patch,
                        args.verbose)
 
-    ok = ok and gitutil.CheckSuppressCCConfig()
+    ok = ok and gitutil.check_suppress_cc_config()
 
     its_a_go = ok or args.ignore_errors
     email_patches(
@@ -204,7 +204,7 @@
     """
     if count == -1:
         # Work out how many patches to send if we can
-        count = (gitutil.CountCommitsToBranch(branch) - start)
+        count = (gitutil.count_commits_to_branch(branch) - start)
 
     series = patchstream.get_metadata(branch, start, count - end)
     warnings = 0