ARM: dts: imx28: add pwm7 muxing options

Add alternative pinmuxing for pwm7.

Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

Author: passgat

arch/arm/boot/dts/nxp/mxs/imx28.dtsi

@@ -755,6 +755,16 @@
 					fsl,pull-up = <MXS_PULL_DISABLE>;
 				};
 
+				pwm7_pins_a: pwm7@0 {
+					reg = <0>;
+					fsl,pinmux-ids = <
+						MX28_PAD_SAIF1_SDATA0__PWM_7
+					>;
+					fsl,drive-strength = <MXS_DRIVE_4mA>;
+					fsl,voltage = <MXS_VOLTAGE_HIGH>;
+					fsl,pull-up = <MXS_PULL_DISABLE>;
+				};
+
 				lcdif_24bit_pins_a: lcdif-24bit@0 {
 					reg = <0>;
 					fsl,pinmux-ids = <