net: ipv6: addrconf: Add the IPv6 link local address of the UB port.

drivers inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I8H6KX


CVE: NA

----------------------------------------------------------------------

1.In the kernel, use the high 24 bits (OUT) and low 40 bits
(serial number) of the GUID to generate the IPv6 link local
address of the UB port.

Signed-off-by: Ge Hu <huge4@huawei.com>
Signed-off-by: Zhongyuan Zhou <zhouzhongyuan1@huawei.com>
Signed-off-by: Yutian Jiang <jiangyutian1@huawei.com>
Signed-off-by: Jeiwei Li <lijiewei5@huawei.com>