it optional as I'm not able to confirm the eeprom format is the same on
earlier cs89x0's. Certainly the my 8920M and the data sheet for 8900A use the
same format.
This allows my RiscStation to examine the cs's eeprom to find it's mac
address, previously it was unable to do this, as the eeprom offsets were hard
coded for locating the mac address.
"true" at the appropriate times for non-PCMCIA interfaces. This
means that the ENETRESET path in cs_ioctl() now runs, thus fixing
multicast (and IPv6) on my Shark. Yay.
* Simplify cs_hash_index(): Rather than taking the bottom 6 bits of
a big-endian CRC32 and reversing them, just take the top 6 bits of
a little-endian CRC32.
