ARM: dts: imx6sx-softing-vining-2000: Use #pwm-cells = <3> for imx27-pwm device

The binding dictates using 3 pwm-cells. Adhere to that.

This fixes the following dtbs_check warnings:

	arch/arm/boot/dts/nxp/imx/imx6sx-softing-vining-2000.dtb: pwm@2080000: #pwm-cells:0:0: 3 was expected
		from schema : http://devicetree.org/schemas/pwm/imx-pwm.yaml#
	arch/arm/boot/dts/nxp/imx/imx6sx-softing-vining-2000.dtb: pwm@2084000: #pwm-cells:0:0: 3 was expected
		from schema : http://devicetree.org/schemas/pwm/imx-pwm.yaml#
	arch/arm/boot/dts/nxp/imx/imx6sx-softing-vining-2000.dtb: pwm@22a8000: #pwm-cells:0:0: 3 was expected
		from schema : http://devicetree.org/schemas/pwm/imx-pwm.yaml#

There is no need for an explicit status = "okay" in the pwm nodes as
the soc dtsi doesn't disable these devices. Drop these properties, too.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/nxp/imx/imx6sx-softing-vining-2000.dts

@@ -46,19 +46,19 @@ led-controller {
 		led-1 {
 			label = "red";
 			max-brightness = <255>;
-			pwms = <&pwm6 0 50000>;
+			pwms = <&pwm6 0 50000 0>;
 		};
 
 		led-2 {
 			label = "green";
 			max-brightness = <255>;
-			pwms = <&pwm2 0 50000>;
+			pwms = <&pwm2 0 50000 0>;
 		};
 
 		led-3 {
 			label = "blue";
 			max-brightness = <255>;
-			pwms = <&pwm1 0 50000>;
+			pwms = <&pwm1 0 50000 0>;
 		};
 	};
 };
@@ -505,24 +505,18 @@ &pcie {
 };
 
 &pwm1 {
-	#pwm-cells = <2>;
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_pwm1>;
-	status = "okay";
 };
 
 &pwm2 {
-	#pwm-cells = <2>;
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_pwm2>;
-	status = "okay";
 };
 
 &pwm6 {
-	#pwm-cells = <2>;
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_pwm6>;
-	status = "okay";
 };
 
 &reg_arm {