Android Goldfish QEMU Pipe

Andorid pipe virtual device generated by android emulator.

Required properties:

- compatible : should contain "google,android-pipe" to match emulator
- reg        : <registers mapping>
- interrupts : <interrupt mapping>

Example:

	android_pipe@a010000 {
		compatible = "google,android-pipe";
		reg = <ff018000 0x2000>;
		interrupts = <0x12>;
	};
