ipv6: fix kabi broken in struct dst_ops

hulk inclusion
category: bugfix
bugzilla: https://gitee.com/src-openeuler/kernel/issues/I8ZGOZ


CVE: CVE-2023-52340

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Fix kabi broken in struct dst_ops.

Signed-off-by: Ziyang Xuan <william.xuanziyang@huawei.com>