patman: Untangle settings from gitutil

The gitutil module is supposed to be independent from patman but one
piece was missed in the series which separated them.

Move the settings setup out of gitutil

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/tools/patman/control.py b/tools/patman/control.py
index cfea35e..fbf368c 100644
--- a/tools/patman/control.py
+++ b/tools/patman/control.py
@@ -26,11 +26,15 @@
 from patman import patchstream
 from patman import patchwork
 from patman import send
+from patman import settings
 
 
 def setup():
     """Do required setup before doing anything"""
     gitutil.setup()
+    alias_fname = gitutil.get_alias_file()
+    if alias_fname:
+        settings.ReadGitAliases(alias_fname)
 
 
 def do_send(args):