hisi_sas: Fix the issue of disk in fail when only 1 cpu online.

driver inclusion
category: feature
bugzilla: NA
CVE: NA

This patch fix the issue of disk in fail when only 1 cpu online.
alloc the DQ number according to the interrupt allocated.

Signed-off-by: Yupeng Zhou <zhouyupeng1@huawei.com>
Reviewed-by: Jian Luo <luojian5@huawei.com>
Reviewed-by: Chuan Gao <gaochuan4@huawei.com>
Reviewed-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>