RDMA/hns: Modify arm_st to NO_ARMED in cqc

driver inclusion
category: bugfix
bugzilla: NA
CVE: NA

REG_NXT_CEQE refes that the first cqe in a cq would generate a ceqe without arm_cq.
In IT testcases, user expects to gain cqes through poll_cq

Feature or Bugfix: Feature

Signed-off-by: wangsirong <wangsirong@huawei.com>
Reviewed-by: hdd.huang <hdd.huang@huawei.com>
Reviewed-by: oulijun <oulijun@huawei.com>
Reviewed-by: liuyixian <liuyixian@huawei.com>
Reviewed-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>