ARM: dts: omap4-sdp: Add support for pwm-leds (keypad and charging LED)

Sections to describe the pwm-leds in the system.
Signed-off-by: NPeter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: NBenoit Cousson <benoit.cousson@linaro.org>

arch/arm/boot/dts/omap4-sdp.dts

@@ -80,6 +80,21 @@
 		};
 	};
 
+	pwmleds {
+		compatible = "pwm-leds";
+		kpad {
+			label = "omap4::keypad";
+			pwms = <&twl_pwm 0 7812500>;
+			max-brightness = <127>;
+		};
+
+		charging {
+			label = "omap4:green:chrg";
+			pwms = <&twl_pwmled 0 7812500>;
+			max-brightness = <255>;
+		};
+	};
+
 	sound {
 		compatible = "ti,abe-twl6040";
 		ti,model = "SDP4430";