arm64: dts: freescale: imx8-ss-lsio: Fix #pwm-cells

i.MX8QM/QXP supports inverted PWM output, thus #pwm-cells needs to be set
to 3.

Fixes: 23fa99b ("arm64: dts: freescale: imx8-ss-lsio: add support for lsio_pwm0-3")
Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

Author: tq-steina

arch/arm64/boot/dts/freescale/imx8-ss-lsio.dtsi

@@ -29,7 +29,7 @@ lsio_subsys: bus@5d000000 {
 			 <&pwm0_lpcg 1>;
 		assigned-clocks = <&clk IMX_SC_R_PWM_0 IMX_SC_PM_CLK_PER>;
 		assigned-clock-rates = <24000000>;
-		#pwm-cells = <2>;
+		#pwm-cells = <3>;
 		interrupts = <GIC_SPI 94 IRQ_TYPE_LEVEL_HIGH>;
 		status = "disabled";
 	};
@@ -42,7 +42,7 @@ lsio_subsys: bus@5d000000 {
 			 <&pwm1_lpcg 1>;
 		assigned-clocks = <&clk IMX_SC_R_PWM_1 IMX_SC_PM_CLK_PER>;
 		assigned-clock-rates = <24000000>;
-		#pwm-cells = <2>;
+		#pwm-cells = <3>;
 		interrupts = <GIC_SPI 95 IRQ_TYPE_LEVEL_HIGH>;
 		status = "disabled";
 	};
@@ -55,7 +55,7 @@ lsio_subsys: bus@5d000000 {
 			 <&pwm2_lpcg 1>;
 		assigned-clocks = <&clk IMX_SC_R_PWM_2 IMX_SC_PM_CLK_PER>;
 		assigned-clock-rates = <24000000>;
-		#pwm-cells = <2>;
+		#pwm-cells = <3>;
 		interrupts = <GIC_SPI 96 IRQ_TYPE_LEVEL_HIGH>;
 		status = "disabled";
 	};
@@ -68,7 +68,7 @@ lsio_subsys: bus@5d000000 {
 			 <&pwm3_lpcg 1>;
 		assigned-clocks = <&clk IMX_SC_R_PWM_3 IMX_SC_PM_CLK_PER>;
 		assigned-clock-rates = <24000000>;
-		#pwm-cells = <2>;
+		#pwm-cells = <3>;
 		interrupts = <GIC_SPI 97 IRQ_TYPE_LEVEL_HIGH>;
 		status = "disabled";
 	};