[Polyfill] Corrent output shape of DeepLab Tflite model

[fujunwei]

The output shape of tflite model is {1, 224, 224} that should be {224, 224, 1} for NHWC, that also can be {1, 224, 224, 1} align with OpenVINO model

<output>
<port id="1">
<dim>1</dim>
<dim>1</dim>
<dim>224</dim>
<dim>224</dim>
</port>
</output>