!503 SAS-related bugfix：rolls back these policies without disabling the hard disk PHY.

Merge Pull Request from: @xia-bing1 
 
SATA disks do not support multiple hosts at the same time. When the same disk is dually connected after power-on, the host that connects to the disk reports an I/O error, which triggers the disk PHY to be disabled.
Solution:
The open-source Hisisas rolls back these policies without disabling the hard disk PHY. 
 
Link:https://gitee.com/openeuler/kernel/pulls/503

 

Reviewed-by: Yihang Li <liyihang9@huawei.com>
Reviewed-by: Jialin Zhang <zhangjialin11@huawei.com>
Signed-off-by: Jialin Zhang <zhangjialin11@huawei.com>