FP2-94: Factory Test: [18. 3-color leds] failed, LED does not work in this test

modify the LED's nodes to android default.
otherwise the LED will not work normally.

Change-Id: I42400738aa869f4261f795f2808e70ed281040a8
diff --git a/arch/arm/boot/dts/msm8974-leds.dtsi b/arch/arm/boot/dts/msm8974-leds.dtsi
index 4be97d8..6942308 100644
--- a/arch/arm/boot/dts/msm8974-leds.dtsi
+++ b/arch/arm/boot/dts/msm8974-leds.dtsi
@@ -16,7 +16,7 @@
 		status = "okay";
 		qcom,rgb_0 {
 			label = "rgb";
-			linux,name = "led:rgb_red";
+			linux,name = "red";
 			qcom,mode = "pwm";
 			qcom,pwm-channel = <6>;
 			qcom,pwm-us = <1000>;
@@ -29,7 +29,7 @@
 
 		qcom,rgb_1 {
 			label = "rgb";
-			linux,name = "led:rgb_green";
+			linux,name = "green";
 			qcom,mode = "pwm";
 			qcom,pwm-channel = <5>;
 			qcom,pwm-us = <1000>;
@@ -41,7 +41,7 @@
 
 		qcom,rgb_2 {
 			label = "rgb";
-			linux,name = "led:rgb_blue";
+			linux,name = "blue";
 			qcom,mode = "pwm";
 			qcom,pwm-channel = <4>;
 			qcom,pwm-us = <1000>;