arm: dts: imx7: add Ricoh RN5T567 PMIC node

Add device tree node for Ricoh RN5T567. Currently we do not need
the individual DC/DC converters or LDO's (and they are also not
yet supported by the driver).

Signed-off-by: Stefan Agner <stefan.agner@toradex.com>

arch/arm/dts/imx7-colibri.dts

@@ -24,6 +24,11 @@
 	sda-gpios = <&gpio1 5 GPIO_ACTIVE_LOW>;
 	scl-gpios = <&gpio1 4 GPIO_ACTIVE_LOW>;
 	status = "okay";
+
+	rn5t567@33 {
+		compatible = "ricoh,rn5t567";
+		reg = <0x33>;
+	};
 };
 
 &i2c4 {