RDMA/hns: Add modify CQ support for hip08

It is needed to call modify cq API for modifying cq
context fields for controlling event generation
moderations. This patch mainly adds it.

Signed-off-by: Lijun Ou <oulijun@huawei.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
diff --git a/drivers/infiniband/hw/hns/hns_roce_main.c b/drivers/infiniband/hw/hns/hns_roce_main.c
index 3dcb2df..31120fd 100644
--- a/drivers/infiniband/hw/hns/hns_roce_main.c
+++ b/drivers/infiniband/hw/hns/hns_roce_main.c
@@ -499,6 +499,7 @@ static int hns_roce_register_device(struct hns_roce_dev *hr_dev)
 
 	/* CQ */
 	ib_dev->create_cq		= hns_roce_ib_create_cq;
+	ib_dev->modify_cq		= hr_dev->hw->modify_cq;
 	ib_dev->destroy_cq		= hns_roce_ib_destroy_cq;
 	ib_dev->req_notify_cq		= hr_dev->hw->req_notify_cq;
 	ib_dev->poll_cq			= hr_dev->hw->poll_cq;