Add support for Linksys EA6350 v3

Correction to my earlier comment where I thought the ea6350 would struggle to match stock firmware for WAN to LAN throughput.

Finally flashed openwrt 19.07 snapshot onto my new ea6350 a few moments ago.

Repeated earlier iperf3 test from server wired to WAN port, to client on LAN port and here are the results. 600+ mbps

C:\install\iperf>iperf3 -c 192.168.1.9 -t 10 -R
Connecting to host 192.168.1.9, port 5201
Reverse mode, remote host 192.168.1.9 is sending
[  4] local 192.168.111.203 port 65476 connected to 192.168.1.9 port 5201
[ ID] Interval           Transfer     Bandwidth
[  4]   0.00-1.00   sec  74.3 MBytes   623 Mbits/sec
[  4]   1.00-2.00   sec  74.6 MBytes   626 Mbits/sec
[  4]   2.00-3.00   sec  72.7 MBytes   609 Mbits/sec
[  4]   3.00-4.00   sec  72.2 MBytes   606 Mbits/sec
[  4]   4.00-5.00   sec  75.7 MBytes   635 Mbits/sec
[  4]   5.00-6.00   sec  74.0 MBytes   620 Mbits/sec
[  4]   6.00-7.00   sec  71.8 MBytes   602 Mbits/sec
[  4]   7.00-8.00   sec  75.8 MBytes   636 Mbits/sec
[  4]   8.00-9.00   sec  75.9 MBytes   637 Mbits/sec
[  4]   9.00-10.00  sec  74.8 MBytes   628 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth
[  4]   0.00-10.00  sec   742 MBytes   622 Mbits/sec                  sender
[  4]   0.00-10.00  sec   742 MBytes   622 Mbits/sec                  receiver

iperf Done.

C:\install\iperf>iperf3 -c 192.168.1.9 -t 10
Connecting to host 192.168.1.9, port 5201
[  4] local 192.168.111.203 port 65478 connected to 192.168.1.9 port 5201
[ ID] Interval           Transfer     Bandwidth
[  4]   0.00-1.00   sec  81.2 MBytes   681 Mbits/sec
[  4]   1.00-2.00   sec  80.5 MBytes   675 Mbits/sec
[  4]   2.00-3.00   sec  81.9 MBytes   687 Mbits/sec
[  4]   3.00-4.00   sec  79.0 MBytes   663 Mbits/sec
[  4]   4.00-5.00   sec  77.0 MBytes   645 Mbits/sec
[  4]   5.00-6.00   sec  76.6 MBytes   643 Mbits/sec
[  4]   6.00-7.00   sec  80.7 MBytes   677 Mbits/sec
[  4]   7.00-8.00   sec  77.8 MBytes   653 Mbits/sec
[  4]   8.00-9.00   sec  78.3 MBytes   657 Mbits/sec
[  4]   9.00-10.00  sec  77.6 MBytes   651 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth
[  4]   0.00-10.00  sec   791 MBytes   663 Mbits/sec                  sender
[  4]   0.00-10.00  sec   791 MBytes   663 Mbits/sec                  receiver

iperf Done.

I have no idea why you are witnessing much lower speeds if above results are correct.

Would you be able to perform an iperf3 test between WAN and LAN port to confirm you see the same results as myself?

Unfortunately, I only have 55/10 mb superfast fibre here, so cannot test 'real world ISP' ultrafast fibre speeds.

Would cloning the MAC address of your ISP supplied router to the ea6530 make a difference?

On a different note, just set up openvpn client. Max download speed is 29-30 Mbps through my VPN provider.

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