[][MAC80211][mt76][Fix unknown symbol for backports 6.1]

[Description]
Fix unknown symbol for backports 6.1

[Release-log]
N/A

Change-Id: Ib7fbc7acdca4667e8994cbd5b5fb90e6bee0f9e3
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/6990429
2 files changed