[FS#432] ath9k: Disconnections from WiFi (router as client)

[LEDE Bugs]

The following task has a new comment added:

FS#432 - ath9k: Disconnections from WiFi (router as client)
User who did this - mirlang (mirlang)

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same here on a WDR4900, the 2.4GHz "disappears" after a few minutes, 5GHz seems to be stable (but has not so much load), hostapd stays up but it seems to stop sending beacons... reverting the commit is successful
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More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=432#comment1442