pci device id for my intel pro/100 ve, an on-board lan nic.

btw, judging from pci device id lists in e.g. bsd drivers, there
are many more intel nics that work with this driver.  should these
be added to the drivers, even though they cannot be tested?  it
could alleviate the plan9 hardware-support problem a bit...

also, i didn't modify /sys/src/fs/pc/ether82557.c since i just saw
it existed and cannot test it not anyway.

mjl (mechiel@xs4all.nl)