net: hinic: modify kernel doc comments

The type of cmdq_free_page() hinic_set_pf_action() and
link_status_event_handler() are void, modify the comments.

Signed-off-by: Zhengchao Shao <shaozhengchao@huawei.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>