[][MAC80211][WiFi6][mt76][Refactor add dummy HW offload of IEEE 802.11 fragmentation]

[Description]
Refactor add dummy HW offload of IEEE 802.11 fragmentation patch
1. change return not support to return 0. otherwise it will impact the interface can't bring up normally on which has set fragm_threshold in hostapd conf.

[Release-log]

Change-Id: I3563fd89af3d2eec670ea28565dfb9e60bdd7355
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/8992073
1 file changed