arm: use the new LED disk activity trigger

- dts: rename 'ide-disk' to 'disk-activity'
- platform: rename 'ide-disk' to 'disk-activity'
- defconfig: rename 'LEDS_TRIGGER_IDE_DISK' to 'LEDS_TRIGGER_DISK'

Signed-off-by: Stephan Linz <linz@li-pro.net>
Acked-by: Sekhar Nori <nsekhar@ti.com>
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
diff --git a/arch/arm/mach-omap1/board-osk.c b/arch/arm/mach-omap1/board-osk.c
index 209aecb..4dfb995 100644
--- a/arch/arm/mach-omap1/board-osk.c
+++ b/arch/arm/mach-omap1/board-osk.c
@@ -172,7 +172,7 @@
 	 * Also, D9 requires non-battery power.
 	 */
 	{ .gpio = OSK_TPS_GPIO_LED_D9, .name = "d9",
-			.default_trigger = "ide-disk", },
+			.default_trigger = "disk-activity", },
 	{ .gpio = OSK_TPS_GPIO_LED_D2, .name = "d2", },
 	{ .gpio = OSK_TPS_GPIO_LED_D3, .name = "d3", .active_low = 1,
 			.default_trigger = "heartbeat", },