RDMA/hns: Skip qp_flow_control_init() for HIP09

Since HIP09 does not require this function, it should be masked.

Link: https://lore.kernel.org/r/1612517974-31867-7-git-send-email-liweihang@huawei.com


Signed-off-by: Yixing Liu <liuyixing1@huawei.com>
Signed-off-by: Weihang Li <liweihang@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>