net: hns3: Support query tx timeout threshold by debugfs

mainline inclusion
from mainline-v6.6-rc1
commit dd2bbc2e
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I7YRUW
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=dd2bbc2ef69a920d93801321b0b01ac6c4e5cacd



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support query tx timeout threshold by debugfs

Signed-off-by: Jijie Shao <shaojijie@huawei.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Jiantao Xiao <xiaojiantao1@h-partners.com>