[][Kernel][mt7988][hnat][Fix HWQoS downlink toggle]

[Description]
Fix HWQoS downlink toggle.
Need support wan to eth2, that is, mtketh-lan2.

[Release-log]
N/A


Change-Id: I1ce0113ddad6c5e0333ead4b4d8d3d245bfc5e6f
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/6852478
1 file changed