ARM: dts: hummingboard/cubox-i: enable front LED PWM explicitly

All PWM users should explicitly enable the used PWMs in their device tree
so they can be disabled by default in imx6qdl.dtsi.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>

arch/arm/boot/dts/imx6qdl-cubox-i.dtsi

@@ -173,6 +173,10 @@
 	};
 };
 
+&pwm1 {
+	status = "okay";
+};
+
 &spdif {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_cubox_i_spdif>;