[][kernel][mt7988][hnat][Fix issue of HQoS not enable when used with NAT66]

[Description]
Fix issue of HQoS not enable when used with NAT66

Without this change, the HQoS functionality would not active when the
entry packet type is NAT66(IPv6 HNAPT).

[Release-log]
N/A


Change-Id: I1b0b00a5840bd080097b2bb5c3eecdafea4dde3f
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/8420332
1 file changed