[libata passthru] update ATAPI completion for new error handling

	VPRINTK("ENTER, drv_stat == 0x%x\n", drv_stat);

	if (unlikely(drv_stat & (ATA_BUSY | ATA_DRQ)))

		ata_to_sense_error(qc, drv_stat);

		/* FIXME: not quite right; we don't want the

		 * translation of taskfile registers into

		 * a sense descriptors, since that's only

		 * correct for ATA, not ATAPI

		 */

		ata_gen_ata_desc_sense(qc);

	else if (unlikely(drv_stat & ATA_ERR)) {

		DPRINTK("request check condition\n");