[PATCH] libata-dev: irq-pio minor fix

irq-pio minor fix:
- remove the redundant hsm_task_state = HSM_ST_IDLE
- add devno to printk() as done in upstream

Signed-off-by: Albert Lee <albertcc@tw.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>