When a network is configured using PSK, but the wifi hw isn't working properly or such, sometimes the following happens:

1) wifi gets disconnected due to beacon loss/probe timeout
2) NM/wpa_supplicant tries to reconnect, but never gets associated
3) NM asks for PSK

Step 3 shouldn't happen if we couldn't even associate, I think it should only happen when the WPA handshake actually was attempted and failed.

This is really bothering me because the ar9170 firmware always gets into a weird state and can no longer transmit, but still receive. So scanning still finds the AP, but connecting to it fails, and NM always keeps asking for the PSK, it should just show that it is now disconnected.

(and maybe the driver should reset the device, but this is rather hard to detect, and we really should just fix the bug in the firmware/driver)