net: hns3: clear hns unused parameter alarm

Several functions in the hns3 driver have unused parameters.
The compiler will warn about them when building
with -Wunused-parameter option of hns3.

Signed-off-by: Peiyang Wang <wangpeiyang1@huawei.com>
Signed-off-by: Hao Lan <lanhao@huawei.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>