Allwinner A1X SoCs Timer Controller

Required properties:

- compatible : should be "allwinner,sun4i-timer"
- reg : Specifies base physical address and size of the registers.
- interrupts : The interrupt of the first timer
- clocks: phandle to the source clock (usually a 24 MHz fixed clock)

Example:

timer {
	compatible = "allwinner,sun4i-timer";
	reg = <0x01c20c00 0x400>;
	interrupts = <22>;
	clocks = <&osc>;
};
