scsi: hisi_sas: Add debugfs file structure for CQ

scsi: hisi_sas: Add debugfs file structure for CQ

BugLink: https://bugs.launchpad.net/bugs/1854548
Create a file structure which was used to save the memory address and CQ
pointer for CQ at debugfs. This structure is bound to the corresponding
debugfs file, it can help callback function of debugfs file to get what it
need.

Link: https://lore.kernel.org/r/1571926105-74636-7-git-send-email-john.garry@huawei.com
Signed-off-by: Luo Jiaxing <luojiaxing@huawei.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
(cherry picked from commit 35ea630b2bad4fe9f7db34624eaab3663bb2cb42)
Signed-off-by: dann frazier <dann.frazier@canonical.com>
Signed-off-by: Seth Forshee <seth.forshee@canonical.com>