patman: Add a missing space in GetMetaDataForList()

Fix this nit to keep the code consistent.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Joe Hershberger <joe.hershberger@ni.com>

tools/patman/patchstream.py

@@ -376,7 +376,7 @@ def GetMetaDataForList(commit_range, git_dir=None, count=None,
     if not series:
         series = Series()
     series.allow_overwrite = allow_overwrite
-    params = gitutil.LogCmd(commit_range,reverse=True, count=count,
+    params = gitutil.LogCmd(commit_range, reverse=True, count=count,
                             git_dir=git_dir)
     stdout = command.RunPipe([params], capture=True).stdout
     ps = PatchStream(series, is_log=True)