kabi: reserve space for cgroup bpf structures

hulk inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I4GII8?from=project-issue


CVE: NA

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We reserve some fields beforehand for cgroup bpf structures prone to change,
therefore, we can hot add/change features of bpf cgroup with this enhancement.

After reserving, normally cache does not matter as the reserved fields
are not accessed at all.

Signed-off-by: Lu Jialin <lujialin4@huawei.com>
Reviewed-by: weiyang wang <wangweiyang2@huawei.com>
Reviewed-by: Xiu Jianfeng <xiujianfeng@huawei.com>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>