!3257 net: hns3: add input parameters checking and arp cleancode

Merge Pull Request from: @svishen 
 
This pr add input parameters checking for hns3_ext.c and fix the arp macro error.

issue:
https://gitee.com/openeuler/kernel/issues/I8M1F3 
 
Link:https://gitee.com/openeuler/kernel/pulls/3257

 

Signed-off-by: Jialin Zhang <zhangjialin11@huawei.com>