kfence: make re-enabling KFENCE compatible with dynamic objects

hulk inclusion
category: feature
bugzilla: 187071, https://gitee.com/openeuler/kernel/issues/I5DLA7



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Since re-enabling KFENCE is supported, make it compatible with
dynamic configuired objects.

Signed-off-by: Liu Shixin <liushixin2@huawei.com>
Reviewed-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>