Adding OpenWrt support for a Trendnet TEW-827DRU-V2

[shep]

I did some research on the MAC addresses and found this:

Adding OpenWrt support for Linksys EA7500 v2

The router's mac address is actually stored in the devinfo partition. It's stored in ASCII, in key-value pairs, which unfortunately the mt76-mt7615 driver cannot use, as it expected binary mac address. From what I understood of the EEPROM structure for the Factory partition, it has 6 bytes allocated for mac address, but when I looked at the partition, it contains Mediatek's mac addresses. In any case, I think the Linksys firmware changes the WiFi interfaces' mac-address (obtained from the dev…