arm64: dts: imx8mq-librem5: Fix led_r and led_g pinctrl assignments

Fix wrong pinctrl assignments.
Signed-off-by: Sebastian Krzyszkowiak <sebastian.krzyszkowiak@puri.sm>
Suggested-by: Eric Kuzmenko <eric.kuzmenko@puri.sm>
Signed-off-by: Martin Kepplinger <martin.kepplinger@puri.sm>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm64/boot/dts/freescale/imx8mq-librem5.dtsi

@@ -1056,13 +1056,13 @@ &pwm2 {
 
 &pwm3 {
 	pinctrl-names = "default";
-	pinctrl-0 = <&pinctrl_led_g>;
+	pinctrl-0 = <&pinctrl_led_r>;
 	status = "okay";
 };
 
 &pwm4 {
 	pinctrl-names = "default";
-	pinctrl-0 = <&pinctrl_led_r>;
+	pinctrl-0 = <&pinctrl_led_g>;
 	status = "okay";
 };