RDMA/hns: Disable UD on HIP08

driver inclusion
category: bugfix
bugzilla: NA
CVE: NA

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Unreliable Datagram is not fully supported on HIP08,
so this feature should be disabled.

Reviewed-by: Zhao Weibo <zhaoweibo3@huawei.com>
Reviewed-by: Hu Chunzhi <huchunzhi@huawei.com>
Signed-off-by: Yang Shunfeng <yangshunfeng2@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Weihang Li <liweihang@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>