net: hns3: disbable pfc en before the reset

driver inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I6W94W


CVE: NA

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To prevent the system from abnormally sending PFC frames after an
abnormal reset. If the reset type is not imp reset or global reset,
the system notifies the firmware to disable pfc before the reset.

Signed-off-by: shaojijie <shaojijie@huawei.com>
Signed-off-by: Jiantao Xiao <xiaojiantao1@h-partners.com>