kabi: reserve space for struct ptp_clock

hulk inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I4KFY7?from=project-issue


CVE: NA

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reserve space for struct ptp_clock.

Signed-off-by: Wang ShaoBo <bobo.shaobowang@huawei.com>
Reviewed-by: Cheng Jian <cj.chengjian@huawei.com>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>