RDMA/hns: Fix cqn type and init resp

RDMA/hns: Fix cqn type and init resp

BugLink: https://bugs.launchpad.net/bugs/1762755
This patch changes the type of cqn from u32 to u64 to keep
userspace and kernel consistent, initializes resp both for
cq and qp to zeros, and also changes the condition judgment
of outlen considering future caps extension.

Suggested-by: Jason Gunthorpe <jgg@mellanox.com>
Fixes: e088a685eae9 (hns: Support rq record doorbell for the user space)
Fixes: 9b44703d0a21 (hns: Support cq record doorbell for the user space)
Signed-off-by: Yixian Liu <liuyixian@huawei.com>
Signed-off-by: Lijun Ou <oulijun@huawei.com>
Signed-off-by: Wei Hu (Xavier) <xavier.huwei@huawei.com>
Signed-off-by: Shaobo Xu <xushaobo2@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
(cherry picked from commit 7b48221cf41a90cf4bfc36e6d699b7fa4169c970)
Signed-off-by: dann frazier <dann.frazier@canonical.com>
Signed-off-by: Seth Forshee <seth.forshee@canonical.com>