ARM: dts: omap4-droid4: Update backlight dt properties

Update the properties for the lm3532 device node for droid4.
With this change the backlight LED string and the keypad
LED strings will be controlled separately.
Signed-off-by: NDan Murphy <dmurphy@ti.com>
Acked-by: NTony Lindgren <tony@atomide.com>
[tony@atomide.com: remove the line "backlight = <&lcd_backlight>"]
Signed-off-by: NTony Lindgren <tony@atomide.com>
Signed-off-by: NJacek Anaszewski <jacek.anaszewski@gmail.com>

arch/arm/boot/dts/omap4-droid4-xt894.dts

@@ -214,7 +214,6 @@
 
 		width-mm = <50>;
 		height-mm = <89>;
-		backlight = <&lcd_backlight>;
 
 		panel-timing {
 			clock-frequency = <0>;		/* Calculated by dsi */
@@ -383,20 +382,30 @@
 };
 
 &i2c1 {
-	lm3532@38 {
+	led-controller@38 {
 		compatible = "ti,lm3532";
+		#address-cells = <1>;
+		#size-cells = <0>;
 		reg = <0x38>;
 
 		enable-gpios = <&gpio6 12 GPIO_ACTIVE_HIGH>;
 
-		lcd_backlight: backlight {
-			compatible = "ti,lm3532-backlight";
+		ramp-up-us = <1024>;
+		ramp-down-us = <8193>;
 
-			lcd {
-				led-sources = <0 1 2>;
-				ramp-up-msec = <1>;
-				ramp-down-msec = <0>;
-			};
+		led@0 {
+			reg = <0>;
+			led-sources = <2>;
+			ti,led-mode = <0>;
+			label = ":backlight";
+			linux,default-trigger = "backlight";
+		};
+
+		led@1 {
+			reg = <1>;
+			led-sources = <1>;
+			ti,led-mode = <0>;
+			label = ":kbd_backlight";
 		};
 	};
 };