[Arm-netbook] eoma68-a20 ethernet testing

[luke.leighton]

oh btw, warning warning warning, as you can see from chris'ss
experience and also mine here as well as phil's (thank for reminding
me phil), you must* get a decent RS232 converter.  there are lots of
"duff" USB-to-RS232 converters out there: not only with this but also
when connecting to other devices (bluelink LM058s at work, openrd
ultimates, odroid-u2) it's possible to "spike" the damn things so
badly that they go completely garbled, and if you look in
/var/log/syslog you can sometimes even see the kernel logs with log
messages reversed or missing letters!

as a "workaround" if you run into this problem then power up the
device by USB-OTG *before* plugging in the USB-to-RS232 converter.
bit of a pain, but it works.

l.