net: hns3: Change PF to add ring-vect binding & resetQ to mailbox

This patch is required to support ring-vector binding and reset
of TQPs requested by the VF driver to the PF driver. Mailbox
handler is added with corresponding VF commands/messages to
handle the request.

Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: lipeng <lipeng321@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>