net: hns3: optimized MAC address in management table.

net: hns3: optimized MAC address in management table.

BugLink: https://launchpad.net/bugs/1859261
mac_addr_hi32 and mac_addr_lo16 are used to store the MAC address
for management table. But using array of mac_addr[ETH_ALEN] would
be more general and not need to care about the big-endian mode of
the CPU.

Signed-off-by: Guojia Liao <liaoguojia@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
(cherry picked from commit 0e02a53d64b470b96739189c015f6d9225c11587)
Signed-off-by: Ike Panhc <ike.pan@canonical.com>
Signed-off-by: Seth Forshee <seth.forshee@canonical.com>