UNIC: add support for querying and configuring the function guid

driver inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I850RQ


CVE: NA

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

In UB mode, there is no MAC address. Therefore, each function requires a
guid as the identity ID, and each function needs to be configured with a
guid during initialization. This patch supports the initialization and
configuration of the function guid. The guid is unique and comes from
imp or random.

Signed-off-by: Fengyan Mu <mufengyan@hisilicon.com>
Signed-off-by: Haibin Lu <luhaibin10@hisilicon.com>
Signed-off-by: Haiqing Fang <fanghaiqing@huawei.com>
Signed-off-by: Junxin Chen <chenjunxin1@huawei.com>