[][MAC80211][mt76][Fix tlv length of mt7915_mcu_get_chan_mib_info]

[Description]
Fix tlv length of mt7915_mcu_get_chan_mib_info

[Release-log]
N/A

Change-Id: I27cd8102d6a72c4251fd08a4fe100b5f4e230e04
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/7806258
1 file changed