!2855 Support SW stats with debugfs

Merge Pull Request from: @stinft 
 
Delete the code for querying hns RoCE SW stats with rdmatool from openEuler and add supporting SW stats with debugfs.

Juan Zhou (2):
   Revert "RDMA/hns: Fix missing dealloc_dfx_cnt() during device unregister"
   Revert "RDMA/hns: Add dfx cnt stats"
https://gitee.com/openeuler/kernel/issues/I8EX1J
 
Junxian Huang (4):
   RDMA/hns: Fix an inappropriate err code for unsupported operations
   RDMA/hns: Support SW stats with debugfs
   RDMA/hns: Remove return value checks of debugfs functions
   RDMA/hns: Don't set the HW stats ops for VF and HIP08
https://gitee.com/openeuler/kernel/issues/I8DJVZ
 
 
Link:https://gitee.com/openeuler/kernel/pulls/2855

 

Reviewed-by: Chengchang Tang <tangchengchang@huawei.com>
Signed-off-by: Jialin Zhang <zhangjialin11@huawei.com>