[FS#1041] Auto channel selection chooses 1 with HT40 enabled

[LEDE Bugs]

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FS#1041 - Auto channel selection chooses 1 with HT40 enabled
User who did this: Mathias Kresin (mkresin)
Status: Unconfirmed -> Waiting on reporter

More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=1041