can't boot with ata-all.c rev 1.19

[Richard Nyberg]

reverting to /sys/dev/disk/ata-all.c rev 1.18 solves the problem.

With rev 1.19 I get lots of stuff like this dragonfly tries to mount /

ata0: ignoring interrupt queued after ints disabled
ad0: READ command timeout tag=0 serv=0 - resetting
ata0: resetting devices .. ata0-slave: ATA identify retries exceeded

(sorry I missed a lot of output, I only had a very small paper)

Then something about not being able to read the mbr I think. Then the
kernel wants me to choose booting device, which of course doesn't
work.

        -Richard