ARM: dts: imx6qdl-vicut1/vicutgo: Rename backlight to backlight_lcd

We have two backlight sources on this boards. Use more specific name for
the LCD backlight to see the difference.
Signed-off-by: David Jander <david@protonic.nl>
Signed-off-by: Robin van der Gracht <robin@protonic.nl>
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/imx6dl-victgo.dts

@@ -21,7 +21,7 @@ chosen {
 		stdout-path = &uart4;
 	};
 
-	backlight: backlight {
+	backlight_lcd: backlight {
 		compatible = "pwm-backlight";
 		pinctrl-names = "default";
 		pinctrl-0 = <&pinctrl_backlight>;
@@ -100,7 +100,7 @@ led-2 {
 
 	panel {
 		compatible = "kyo,tcg121xglp";
-		backlight = <&backlight>;
+		backlight = <&backlight_lcd>;
 		power-supply = <&reg_3v3>;
 
 		port {

arch/arm/boot/dts/imx6qdl-vicut1.dtsi

@@ -16,7 +16,7 @@ chosen {
 		stdout-path = &uart4;
 	};
 
-	backlight: backlight {
+	backlight_lcd: backlight {
 		compatible = "pwm-backlight";
 		pinctrl-names = "default";
 		pinctrl-0 = <&pinctrl_backlight>;
@@ -102,7 +102,7 @@ led-2 {
 
 	panel {
 		compatible = "kyo,tcg121xglp";
-		backlight = <&backlight>;
+		backlight = <&backlight_lcd>;
 		power-supply = <&reg_3v3>;
 
 		port {