libata-acpi: clean up parameters and misc stuff

This patch cleans up libata-acpi such that it looks similar to other
libata files.  This patch doesn't introuce any behavior changes.

* make libata-acpi functions take ata_device instead of ata_port +
  device index
* s/atadev/dev/
* de-indent local variable declarations
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

drivers/ata/libata-core.c

@@ -1869,7 +1869,7 @@ int ata_dev_configure(struct ata_device *dev)
 		ata_dev_printk(dev, KERN_DEBUG, "%s: ENTER\n", __FUNCTION__);
 
 	/* set _SDD */
-	rc = ata_acpi_push_id(ap, dev->devno);
+	rc = ata_acpi_push_id(dev);
 	if (rc) {
 		ata_dev_printk(dev, KERN_WARNING, "failed to set _SDD(%d)\n",
 			rc);

drivers/ata/libata.h

@@ -99,13 +99,13 @@ extern struct ata_port *ata_port_alloc(struct ata_host *host);
 /* libata-acpi.c */
 #ifdef CONFIG_ATA_ACPI
 extern int ata_acpi_exec_tfs(struct ata_port *ap);
-extern int ata_acpi_push_id(struct ata_port *ap, unsigned int ix);
+extern int ata_acpi_push_id(struct ata_device *dev);
 #else
 static inline int ata_acpi_exec_tfs(struct ata_port *ap)
 {
 	return 0;
 }
-static inline int ata_acpi_push_id(struct ata_port *ap, unsigned int ix)
+static inline int ata_acpi_push_id(struct ata_device *dev)
 {
 	return 0;
 }