Comment 74 for bug 8196

On IRC, I asked Nico to try Chuck's ata_piix.ko which should have been
equivalent to what was in -25.1 (i.e., #define ATA_ENABLE_ATAPI #undef
ATA_ENABLE_PATA), and he confirmed that it fixed his problem, while he still has
problems with -25.2. I have no idea why, since he's dealing with disks, and not
CD-ROMs, but since we're currently planning to roll that fix in post-preview, it
should at least fix that problem.