net: hns3: adds debugfs to dump more info of shaping parameters

mainline inclusion
from mainline-v5.11-rc1
commit c331ecf1
category: feature
bugzilla: 173966
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c331ecf1afc1211ce927cc4bd3a978b3655c0854



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Adds debugfs to dump new shaping parameters: rate and flag.

Signed-off-by: Yonglong Liu <liuyonglong@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: li yongxin <liyongxin1@huawei.com>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>