[FS#408] Archer C7 has incorrect default bssid addresses for wifi networks

[LEDE Bugs]

The following task has a new comment added:

FS#408 - Archer C7 has incorrect default bssid addresses for wifi networks
User who did this - howl (howl)

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I have tested with a tp-link tl-wr1043nd and I could see that it also happens that the default bssid of the wlan is used for the client connection and the the ap connection gets another one with the second hex digit incremented by 2, so that it's not a bug.

I also could see that the eth1 (lan) and the bssid of the wlan is the same, so it's possible for lede to have two networks with the same mac address, so indeed in the C7 the default bssid of the wlans are wrong.

The bssid of the 2,4 GHz network should be the same as the eth1 mac address, and the default bssid of the 5 GHz network should be the same one minus 1 to conform the mac and bssids that the default firmware has.
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More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=408#comment1322