ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers

This patch fixes host drivers to use CONFIG_PM_SLEEP instead of CONFIG_PM
where applicable.  Benefits of this change:

* unused code is not being compiled in for CONFIG_PM=y, CONFIG_PM_SLEEP=n
  and CONFIG_PM_RUNTIME=y configurations

* easier transition to use struct dev_pm_ops and SIMPLE_DEV_PM_OPS() in
  the future

* more consistent code (there are host drivers which are using the correct
  CONFIG_PM_SLEEP checks already)

The patch leaves the core libata code and ->port_[suspend,resume] support
in sata_[inic162x,nv,sil24].c alone for now.

Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
diff --git a/drivers/ata/ata_piix.c b/drivers/ata/ata_piix.c
index 6334c8d..893e30e 100644
--- a/drivers/ata/ata_piix.c
+++ b/drivers/ata/ata_piix.c
@@ -830,7 +830,7 @@
 	return ap->ops->bmdma_status(ap) & ATA_DMA_INTR;
 }
 
-#ifdef CONFIG_PM
+#ifdef CONFIG_PM_SLEEP
 static int piix_broken_suspend(void)
 {
 	static const struct dmi_system_id sysids[] = {
@@ -1767,7 +1767,7 @@
 	.id_table		= piix_pci_tbl,
 	.probe			= piix_init_one,
 	.remove			= piix_remove_one,
-#ifdef CONFIG_PM
+#ifdef CONFIG_PM_SLEEP
 	.suspend		= piix_pci_device_suspend,
 	.resume			= piix_pci_device_resume,
 #endif