kabi: reserve space for struct worker

hulk inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I4JBL0


CVE: NA

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Reserve space for struct worker.

Signed-off-by: Yu Liao <liaoyu15@huawei.com>
Reviewed-by: Cheng Jian <cj.chengjian@huawei.com>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>