A bunch of drivers contain loops over host->my_devices in their
proc_info method just to printout info we already get from sysfs.
Kill those, the ones that actually add additional information
from their private data need to get sysfs attributes for the fist.

BTW, does someone have opintions on reading of /proc/scsi/scsi?
It's just a duplication of the sysfs tree so it should probably
go away also.  OTOH there's a slightly higher chance on userland
actually using this than for the LLDDs..