UNIC: Adds the process of UNIC driver initializing

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


CVE: NA

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Add UB mode to NIC driver, and when the driver runs in UB mode, change
the features that UB supports in initializing state.

This patch creates new files to host the function interfaces of the UB.

Signed-off-by: Fengyan Mu <mufengyan@hisilicon.com>
Signed-off-by: Junxin Chen <chenjunxin1@huawei.com>