patman: Flush output when there is no newline

Output which does not include a newline will not be displayed unless
flushed. Add a flush to ensure that it becomes visible.
Signed-off-by: Simon Glass <sjg@chromium.org>

tools/patman/terminal.py

@@ -55,6 +55,8 @@ def Print(text='', newline=True, colour=None):
         print text,
         if newline:
             print
+        else:
+            sys.stdout.flush()
 
 def SetPrintTestMode():
     """Go into test mode, where all printing is recorded"""