update export_lite

Author: Channingss

deploy/lite/export_lite.py

@@ -21,7 +21,8 @@ def export_lite():
     opt = lite.Opt()
     model_file = os.path.join(FLAGS.model_dir, '__model__')
     params_file = os.path.join(FLAGS.model_dir, '__params__')
-    opt.run_optimize("", model_file, params_file, FLAGS.place, FLAGS.save_file)
+    opt.run_optimize("", model_file, params_file, 'naive_buffer', FLAGS.place,
+                     FLAGS.save_file)
 
 
 if __name__ == '__main__':