Don't bother retrying errors for encrypted drives that are locked.

sys/cam/scsi/scsi_all.c:
	In the asc_table, if we get a 0x20,0x02 error ("Access denied -
	no access rights"), don't bother retrying.  Instead, immediately
	fail the command.

	This is the error returned by Self Encrypting Drives (SED) when
	they are locked.

MFC after:	3 days
Sponsored by:	Spectra Logic

sys/cam/scsi/scsi_all.c

@@ -1614,7 +1614,7 @@ static struct asc_table_entry asc_table[] = {
 	{ SST(0x20, 0x01, SS_RDEF,	/* XXX TBD */
 	    "Access denied - initiator pending-enrolled") },
 	/* DT PWROMAEBK   */
-	{ SST(0x20, 0x02, SS_RDEF,	/* XXX TBD */
+	{ SST(0x20, 0x02, SS_FATAL | EPERM,
 	    "Access denied - no access rights") },
 	/* DT PWROMAEBK   */
 	{ SST(0x20, 0x03, SS_RDEF,	/* XXX TBD */