ARM: dts: vf610-zii-scu4-aib: Add HI8435 support

On the vf610-zii-scu4-aib board there is a hi8435 (32-channel
discrete-to-digital SPI sensor device) in the DSPI0 bus.

Add support for it.

Signed-off-by: Fabio Estevam <festevam@gmail.com>
Reviewed-by: Chris Healy <cphealy@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/vf610-zii-scu4-aib.dts

@@ -397,6 +397,20 @@
 	};
 };
 
+&dspi0 {
+	pinctrl-0 = <&pinctrl_dspi0>;
+	pinctrl-names = "default";
+	bus-num = <0>;
+	status = "okay";
+
+	adc@5 {
+		compatible = "holt,hi8435";
+		reg = <5>;
+		gpios = <&gpio5 3 GPIO_ACTIVE_HIGH>;
+		spi-max-frequency = <1000000>;
+	};
+};
+
 &dspi1 {
 	bus-num = <1>;
 	pinctrl-names = "default";