net: hns3: Config NIC port speed same as that of optical module

Port 0/1 of HiP08 supports 10G and 25G. This patch adds a
change to configure NIC port speed same as that of  optical
module(SFP/QFSP). Driver gets the optical module speed and
sets NIC port speed accordingly.

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