This patch improves some of the handling of PA-RISC tulip cards.

 - Introduce HAS_SWAPPED_SEEPROM and NEEDS_FAKE_MEDIA_TABLE
 - Only trigger this code on GSC machines.  The pure PCI machines don't
   have these cards.
 - Allow the chip_name to be overridden in tulip_init_one().
 - Fix some indentation.
 - Handle the output from tulip_read_eeprom() better.