net: hns3: split out hclge_dbg_dump_qos_buf_cfg()

mainline inclusion
from mainline-v5.12-rc1
commit b3712fa7
category: cleanup
bugzilla: NA
CVE: NA

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

hclge_dbg_dump_qos_buf_cfg() is bloated, so split it into
separate functions for readability and maintainability.

Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Yonglong Liu <liuyonglong@huawei.com>
Reviewed-by: Junxin Chen <chenjunxin1@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>