libata-acpi: s/CONFIG_SATA_ACPI/CONFIG_ATA_ACPI/

ACPI applies to both SATA and PATA.  Drop the 'S' from the config
variable.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
diff --git a/drivers/ata/libata.h b/drivers/ata/libata.h
index 316bf8a..49ec182 100644
--- a/drivers/ata/libata.h
+++ b/drivers/ata/libata.h
@@ -97,7 +97,7 @@
 extern struct ata_port *ata_port_alloc(struct ata_host *host);
 
 /* libata-acpi.c */
-#ifdef CONFIG_SATA_ACPI
+#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);
 #else