[][MAC80211][hnat][Add DSCP offload support]

[Description]
Add DSCP offload support.

If without this patch, PPE driver cannot supports DSCP offload.

[Release-log]
N/A


Change-Id: Id8ab0cc86eb40b060eccd4488fa2926b40dd95e9
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/7203713
1 file changed