Use torch_tensorrt.Device instead of torch.device in trt compile (#8051)

Fixes #8050

### Description

A few sentences describing the changes proposed in this pull request.

### Types of changes
<!--- Put an `x` in all the boxes that apply, and remove the not
applicable items -->
- [x] Non-breaking change (fix or new feature that would not break
existing functionality).
- [ ] Breaking change (fix or new feature that would cause existing
functionality to change).
- [ ] New tests added to cover the changes.
- [ ] Integration tests passed locally by running `./runtests.sh -f -u
--net --coverage`.
- [ ] Quick tests passed locally by running `./runtests.sh --quick
--unittests --disttests`.
- [ ] In-line docstrings updated.
- [ ] Documentation updated, tested `make html` command in the `docs/`
folder.

Signed-off-by: YunLiu <55491388+KumoLiu@users.noreply.github.com>

Author: KumoLiu

monai/networks/utils.py

@@ -851,7 +851,7 @@ def _onnx_trt_compile(
     # wrap the serialized TensorRT engine back to a TorchScript module.
     trt_model = torch_tensorrt.ts.embed_engine_in_new_module(
         f.getvalue(),
-        device=torch.device(f"cuda:{device}"),
+        device=torch_tensorrt.Device(f"cuda:{device}"),
         input_binding_names=input_names,
         output_binding_names=output_names,
     )