Contrary to what the rtl8019 docs say, this seems to be necessary.
Observed by myself when implementing non-auto earlier, and independently
complained about by Antti Kante in PR 9962.
media.
- read out original settings to find out what the defaults (EEPROM) for this
board were, instad of hardwiring to auto.
XXX the first might need further refinement. At least on my boards, 10baseT
doesn't work for 10baseT, only AUTO.
