livepatch/core: support jump_label

hulk inclusion
category: feature
bugzilla: 5391/28338/24634
CVE: NA

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The kpatch-build processes the __jump_table special section,
and only the jump_lable used by the changed functions will be
included in __jump_table section, and the livepatch should
process the tracepoint again after the dynamic relocation.

NOTE: adding new tracepoints definition is not supported.

Signed-off-by: Cheng Jian <cj.chengjian@huawei.com>
Reviewed-by: Xie XiuQi <xiexiuqi@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>