update rpi-display-overlay.dts pins for 5.10+

backlight has been turned off

Author: awatterott

arch/arm/boot/dts/overlays/rpi-display-overlay.dts

@@ -61,7 +61,7 @@
 				buswidth = <8>;
 				reset-gpios = <&gpio 23 1>;
 				dc-gpios = <&gpio 24 0>;
-				led-gpios = <&gpio 18 0>;
+				led-gpios = <&gpio 18 1>;
 				debug = <0>;
 			};