SOCIONEXT Milbeaut Updown counter

Required properties:
- compatible:		Must be "socionext,milbeaut-updown-counter".
- interrupts:       SPI number of the device's set.
- cms_type: 		connected_device
                      1: updown button  (updown counter mode)
                      2: rotary encoder (phase difference counter mode)

Example:

	updown0: updown@1e002000 {
		#address-cells = <1>;
		#size-cells = <0>;
		compatible = "socionext,milbeaut-updown";
		reg = <0x1e002000 0x20>;
		interrupts = <0 104 0x4>;
		clocks = <&rclk>;
		clock-names = "mux";

		counter {
			compatible = "socionext,milbeaut-updown-counter";
			interrupts = <0 104 0x4>;
			cms_type = <1>;
		};
	};
