[SCSI] ipr: Allow driver_data to be passed for dynamic ids

Since driver_data for pci ids in the ipr driver is now
just flags, we can allow these to be passed in from userspace
for dynamic ids.

Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>