ieee1394: add quirk fix for Freecom HDD

According to http://bugzilla.kernel.org/show_bug.cgi?id=12206

, Freecom
FireWire Hard Drive 1TB reports max_rom=2 but returns garbage if block
read requests are used to read the config ROM.  Force max_rom=0 to limit
them to quadlet read requests.

Reported-by: Christian Mueller <cm1@mumac.de>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>