!491 [sync] PR-477: tools: fix compile error introduced by LoongArch commit

Merge Pull Request from: @openeuler-sync-bot 
 

Origin pull request: 
https://gitee.com/openeuler/kernel/pulls/477 
 
when compile x86_64 using make ARCH=x86_64,error occurred,the reason is
ARCH is a command-line argument.So split loongarch architecture from others. 
 
Link:https://gitee.com/openeuler/kernel/pulls/491

 

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