[PATCH] libata-dev: Move out the HSM code from ata_host_intr()

Move out the irq-pio HSM code from ata_host_intr() to the new ata_hsm_move() function verbatim.

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