Unsupported node kind (%r) in node %r

Raise code

        "quantized::add_relu": lambda self, node:
            self.add_qadd(node, NNAPI_OperationCode.ADD, NNAPI_FuseCode.FUSED_RELU),
    }

    def add_node(self, node):
        adder = self.ADDER_MAP.get(node.kind())
        if not adder:
            raise Exception("Unsupported node kind (%r) in node %r" % (node.kind(), node))
        adder(self, node)

    def add_getattr(self, node):
        assert node.inputsSize() == 1
        assert node.outputsSize() == 1
        obj_ctype, obj = self.get_constant_value(node.inputsAt(0))
        assert str(obj_ctype).startswith("__torch__.")