!1788 exfat: check if filename entries exceeds max filename length

Merge Pull Request from: @ci-robot 
 
PR sync from: ZhaoLong Wang <wangzhaolong1@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/DQYYYBQY5VIVHRZYE472SI2JF7U3YOM6/ 
 
https://gitee.com/src-openeuler/kernel/issues/I7TLII 
 
Link:https://gitee.com/openeuler/kernel/pulls/1788

 

Reviewed-by: zhangyi (F) <yi.zhang@huawei.com>
Signed-off-by: Jialin Zhang <zhangjialin11@huawei.com>