!576 Support congestion control algorithm configuration

Merge Pull Request from: @stinft 
 
```bash
Feature information:
1.RDMA/hns: Modify congestion abbreviation
The currently used abbreviation of cong cannot clearly
indicate the meaning, so the full name congest is used instead.

2.RDMA/hns: Support congestion control algorithm configuration at QP granularity
This patch supports to configure congestion control algorithm
based on QP granulariy. The configuration will be sent to
driver from user space. And then driver configures the selected
algorithm into QPC.
The current XRC type QP cannot deliver the configured
algorithm to kernel space, so the driver will set the default
algorithm for XRC type QP. And the default algorithm type is
controlled by the firmware.
```
bugzilla：#I6N1G4
 
 
Link:https://gitee.com/openeuler/kernel/pulls/576

 

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