Enabling DFS support on MT7613BE

[andyboeh]

I've got a Yuncore CPE200 outdoor WiFi bridge with MT7613BEN chipset. Unfortunately, it's quite useless with OpenWrt since DFS is not supported - but DFS is a requirement for using it outdoor.

Hunting down the code for DFS, according to the commit message, DFS "just" hasn't been tested on the MT7663 (MT7613BE) device.

Is this really the only reason or have there been (failed) tests in the meantime?

@dangowrt seems like you added support for this device, do you have any experience with this?

[andyboeh]

It's trivial to enable DFS on this chip, but how can I test if it's really working? I could do a comparison with another Mediatek-based router, but I'm not sure if I'm near enough any radar to trigger detection.