内核版本 4.9.22 支持 MT7601U，设备发现之后不能扫描 AP，需要 cfg80211 wireless extensions compatibility 支持
内核描述如下
Enable this option if you need old userspace for wireless extensions with cfg80211-based drivers.
内核配置如下
[*] Networking support --->
-*- Wireless --->
<*> cfg80211 - wireless configuration API
[ ] nl80211 testmode command (NEW)
[ ] enable developer warnings (NEW)
[*] enable powersave by default (NEW)
[ ] cfg80211 DebugFS entries (NEW)
[*] cfg80211 wireless extensions compatibility
<*> Generic IEEE 802.11 Networking Stack (mac80211)
Default rate control algorithm (Minstrel) --->
[ ] Enable mac80211 mesh networking (pre-802.11s) support (NEW)
[ ] Export mac80211 internals in DebugFS (NEW)
[ ] Trace all mac80211 debug messages (NEW)
[ ] Select mac80211 debugging features (NEW) ---