powerpc: use the new LED disk activity trigger

- dts: rename 'ide-disk' to 'disk-activity'
- defconfig: rename 'ADB_PMU_LED_IDE' to 'ADB_PMU_LED_DISK'

Cc: Joseph Jezak <josejx@gentoo.org>
Cc: Jörg Sommer <joerg@alea.gnuu.de>
Signed-off-by: Stephan Linz <linz@li-pro.net>
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
diff --git a/drivers/macintosh/Kconfig b/drivers/macintosh/Kconfig
index 3e8b29e..d28690f 100644
--- a/drivers/macintosh/Kconfig
+++ b/drivers/macintosh/Kconfig
@@ -96,19 +96,18 @@
 	  Support the front LED on Power/iBooks as a generic LED that can
 	  be triggered by any of the supported triggers. To get the
 	  behaviour of the old CONFIG_BLK_DEV_IDE_PMAC_BLINK, select this
-	  and the ide-disk LED trigger and configure appropriately through
-	  sysfs.
+	  and the disk LED trigger and configure appropriately through sysfs.
 
-config ADB_PMU_LED_IDE
-	bool "Use front LED as IDE LED by default"
+config ADB_PMU_LED_DISK
+	bool "Use front LED as DISK LED by default"
 	depends on ADB_PMU_LED
 	depends on LEDS_CLASS
 	depends on IDE_GD_ATA
 	select LEDS_TRIGGERS
-	select LEDS_TRIGGER_IDE_DISK
+	select LEDS_TRIGGER_DISK
 	help
-	  This option makes the front LED default to the IDE trigger
-	  so that it blinks on IDE activity.
+	  This option makes the front LED default to the disk trigger
+	  so that it blinks on disk activity.
 
 config PMAC_SMU
 	bool "Support for SMU  based PowerMacs"