RDMA/hns: Fix incorrect print type in bond

driver inclusion
category: cleanup
bugzilla: https://gitee.com/openeuler/kernel/issues/I6GT7F



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Unsigned variable, print type should be "%u".
This patch fixes it.

Fixes: 79c470b1 ("RDMA/hns: Fix wild pointer error of RoCE bonding when rmmod hns3")
Signed-off-by: Chengchang Tang <tangchengchang@huawei.com>