hns3 udma: support of link status change

driver inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I85R2F


CVE: NA

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UDMA driver would report a event if link status changed.
Driver set latest link status in event_type.

Signed-off-by: Weibo Zhao <zhaoweibo3@huawei.com>