patman: fix gitutil for decorations

The git config parameter log.decorate is quite useful when working with git.
Patman, however can not handle the decorated output when parsing the commit.
To prevent this use the '--no-decorate' switch for git-log.

Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
Acked-by: Simon Glass <sjg@chromium.org>
diff --git a/tools/patman/gitutil.py b/tools/patman/gitutil.py
index f485750..e31da15 100644
--- a/tools/patman/gitutil.py
+++ b/tools/patman/gitutil.py
@@ -39,7 +39,8 @@
     Return:
         Number of patches that exist on top of the branch
     """
-    pipe = [['git', 'log', '--no-color', '--oneline', '@{upstream}..'],
+    pipe = [['git', 'log', '--no-color', '--oneline', '--no-decorate',
+             '@{upstream}..'],
             ['wc', '-l']]
     stdout = command.RunPipe(pipe, capture=True, oneline=True).stdout
     patch_count = int(stdout)
@@ -92,7 +93,8 @@
         Number of patches that exist on top of the branch
     """
     range_expr = GetRangeInBranch(git_dir, branch, include_upstream)
-    pipe = [['git', '--git-dir', git_dir, 'log', '--oneline', range_expr],
+    pipe = [['git', '--git-dir', git_dir, 'log', '--oneline', '--no-decorate',
+             range_expr],
             ['wc', '-l']]
     result = command.RunPipe(pipe, capture=True, oneline=True)
     patch_count = int(result.stdout)
@@ -106,7 +108,7 @@
     Return:
         Number of patches that exist on top of the branch
     """
-    pipe = [['git', 'log', '--oneline', commit_range],
+    pipe = [['git', 'log', '--oneline', '--no-decorate', commit_range],
             ['wc', '-l']]
     stdout = command.RunPipe(pipe, capture=True, oneline=True).stdout
     patch_count = int(stdout)