[FS#861] ath9k doesn't respect setting country and stuck at max TX 18 dBm

[LEDE Bugs]

The following task has a new comment added:

FS#861 - ath9k doesn't respect setting country and stuck at max TX 18 dBm
User who did this - clyang (clyang)

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I'm having the same issue on WR940N V4
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More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=861#comment3358