!2042 ima: Add macros to isolate the IMA digest list

Merge Pull Request from: @ci-robot 
 
PR sync from: Zhou Shuiqing <zhoushuiqing2@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/RGT4FKRKV6EC3RVRNGL3JGSU7SAJKJUZ/ 
 
https://gitee.com/openeuler/kernel/issues/I7YT6U 
 
Link:https://gitee.com/openeuler/kernel/pulls/2042

 

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