* ADF7242 IEEE 802.15.4 *

Required properties:
  - compatible:		should be "adi,adf7242", "adi,adf7241"
  - spi-max-frequency:	maximal bus speed (12.5 MHz)
  - reg:		the chipselect index
  - interrupts:		the interrupt generated by the device via pin IRQ1.
			IRQ_TYPE_LEVEL_HIGH (4) or IRQ_TYPE_EDGE_FALLING (1)

Example:

	adf7242@0 {
		compatible = "adi,adf7242";
		spi-max-frequency = <10000000>;
		reg = <0>;
		interrupts = <98 IRQ_TYPE_LEVEL_HIGH>;
		interrupt-parent = <&gpio3>;
	};