KABI: reserve space for IMA IPE

hulk inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I4GK6B


CVE: NA
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Reserving some fields for future IMA IPE development.

Signed-off-by: Guo Zihua <guozihua@huawei.com>
Reviewed-by: weiyang wang <wangweiyang2@huawei.com>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>