* Google Inc. Citadel SoC

Required properties:
- compatible: Should contain "google,citadel".
- reg: SPI address for chip
- spi-max-frequency: max SPI frequency supported by the device

Example:
	citadel@0 {
		compatible = "google,citadel";
		reg = <0>;
		spi-max-frequency = <50000000>;
	};
};
