SCSI: Add missing state transition BLOCK->OFFLINE

From: 	James.Smart@Emulex.Com
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

drivers/scsi/scsi_lib.c

@@ -1672,6 +1672,7 @@ scsi_device_set_state(struct scsi_device *sdev, enum scsi_device_state state)
 		case SDEV_CREATED:
 		case SDEV_RUNNING:
 		case SDEV_QUIESCE:
+		case SDEV_BLOCK:
 			break;
 		default:
 			goto illegal;