MFC r254970 (by ken):
If a drive returns ASC/ASCQ 0x04,0x11 "Logical unit not ready,
notify (enable spinup) required", instead of doing the normal
retries, poll for a change in status.

We will poll every half second for a minute for the status to
change.

Hitachi drives (and likely other SAS drives) return that ASC/ASCQ
when they are waiting to spin up.  What it means is that they are
waiting for the SAS expander to send them the SAS
NOTIFY (ENABLE SPINUP) primitive.

That primitive is the mechanism expanders/enclosures use to
sequence drive spinup to avoid overloading power supplies.
MFC r255307 (by bryanv):
Add camcontrol support for the SCSI sanitize command
MFC r256836:
Remove hard limit on number of BIOs handled with one ATA TRIM request.
MFC r256895:
Fix memory and references leak due to unfreed path.