Merge branch 'add_reade' into '0.6.15'

add README_hip.md

See merge request aicomponent/torch-sparce!6

README_hip.md

+# PyTorch Sparse
+
+## 编译问题
+
+### 编译torch_sparse==0.6.15 目前不支持torch2.1版本的torch，如果编译torch2.1版本的torch_sparse0.6.15版本需要修改一些代码
+
+### 文件路径pytorch_sparse/csrc/version.cpp
+
+```
+static auto registry = torch::RegisterOperators().op("torch_sparse::cuda_version", &sparse::cuda_version); -> static auto registry = torch::RegisterOperators().op("torch_sparse::cuda_version", [] { return sparse::cuda_version(); });
+```
+# 注释：上述内容为README.md的补充。