[OpenVINO EP] GetCapability shouldn't override the NPU device type as CPU

[mingmingtasd]

GetCapability::GetCapability overrides the NPU device type as CPU to construct the DataOps, it'svery confusing and and unreasonable. The DataOps::op_is_supported(std::string name, std::vector<SupportedOp>& op_list) will use supported_op_mode and populate_op_mode_supported to identify whether the op is supported by the specified device type. For NPU device type, for example, we should define something like {"Abs", V_2020_4, {"CPU", "GPU", "NPU"}}, instead of {"Abs", V_2020_4, {"CPU", "GPU"}}, in the supported_op_mode .

There should also be a branch for NPU: https://github.com/microsoft/onnxruntime/blob/main/onnxruntime/core/providers/openvino/ov_versions/data_ops.cc#L595

[mingmingtasd]

cc/ @yaru @fdwr @huningxin

[skottmckay]

@sfatimar @sspintel @preetha-intel

[sfatimar]

We have support for NPU different from GPU Accelerator. There is no subgraph partitioning with NPU and CPU, if model/subgraph fails on NPU it is completely offloaded to OpenVINO CPU. Hence we only check for CPU Compatibility in GetCapability.