livepatch/ppc64: Implement livepatch without ftrace for ppc64be

hulk inclusion
category: feature
bugzilla: 51924
CVE: NA

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Initially completed the livepatch for ppc64be, the call from
the old function to the new function, using stub space, this
is actually problematic, because we cannot effectively recover
R2. This problem will be fixed later.

Signed-off-by: Cheng Jian <cj.chengjian@huawei.com>
Reviewed-By: Xie XiuQi <xiexiuqi@huawei.com>
Signed-off-by: yangerkun <yangerkun@huawei.com>

Signed-off-by: Dong Kai <dongkai11@huawei.com>

Signed-off-by: Ye Weihua <yeweihua4@huawei.com>
Reviewed-by: Kuohai Xu <xukuohai@huawei.com>
Reviewed-by: Yang Jihong <yangjihong1@huawei.com>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>