Registering a new 'NPU' device type to PyTorch

Recently, we added a merge request about our ‘NPU’ device type registering to PyTorch(Add new keys for Ascend NPU by lichao0613 · Pull Request #75863 · pytorch/pytorch · GitHub).
NPU is device abstraction of Ascend Neural Networks Process Units, which works as a normal torch device like CPU, GPU and XPU.
Registering of ‘NPU’ is very important for us to enable our extension( , it’s glad to see our PR can be reviewed as soon as possible. Any questions or suggestions will be answered seriously and promptly.