The module parameter eeprom=  accepts a list of filenames (looked for
in /lib/firmware) to fake eeprom images. The list is in probe order,
which means it is unpredictable if you have more than one spec card
plugged -- but it's the same every time your reload the module.

This is a tool for developers who want to experiment with eeproms, so
this "rude" approach to multi-card setups is not considered an issue.
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>