net: hns3: change location of function hclge_set_vlan_filter

driver inclusion
category: cleanup
bugzilla: NA
CVE: NA

This patch just changes location of function hclge_set_vlan_filter as
same as kernel-dev branch.

Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Reviewed-by: linyunsheng <linyunsheng@huawei.com>
Reviewed-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>