net: hns3: add interfaces to query information of tm priority/qset

mainline inclusion
from mainline-v5.12-rc1
commit 2bbad0aa
category: feature
bugzilla: NA
CVE: NA

----------------------------

Add some interfaces to get information of tm priority and qset,
then they can be used by debugfs.

Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Yonglong Liu <liuyonglong@huawei.com>
Reviewed-by: Junxin Chen <chenjunxin1@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>