[NPU] Add label_smooth_op

Author: Ray2020BD

python/paddle/fluid/tests/unittests/npu/test_label_smooth_op_npu.py

@@ -74,7 +74,7 @@ def init_dtype(self):
         self.dtype = np.float32
 
     def test_check_output(self):
-        self.check_output_with_place(self.place, check_dygraph=False)
+        self.check_output_with_place(self.place)
 
     def test_check_grad(self):
         if self.dtype == np.float16: