[][Kernel][hnat][Fix the conditions for adding vlan info]

[Description]
Fix the conditions for adding vlan info.
When eth1.x -> wifi, packets cannot be forwarded through the HW path.
(due to with wrong HNAT vlan info)

The patch fix it.

[Release-log]
N/A


Change-Id: Id9e02493157bfc2f3a4dbf046be127cd491f9b17
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/7778652
1 file changed