[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 - Felix Fietkau (nbd)

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Should be fixed in r3176-82d580e8b5, please test
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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#comment1450