!4620 Some fixes for Hygon model 4h~6h processors

Merge Pull Request from: @hygoner 
 
Some fixes of NB and EDAC for Hygon model 4h~6h processors.

Reference:
https://gitee.com/openeuler/kernel/pulls/1638 
 
Link:https://gitee.com/openeuler/kernel/pulls/4620

 

Reviewed-by: Jason Zeng <jason.zeng@intel.com>
Signed-off-by: Zhang Changzhong <zhangchangzhong@huawei.com>