Qualcomm Technologies, Inc. IPC Router FIFO Transport

Required properties:
- compatible:	should be "qcom,ipcr_fifo_xprt"
- reg:		the irq register to raise an interrupt
- interrupts:	the receiving interrupt line
- qcom,ipc-shm:	Reference to shared memory phandle

Example:

	fifo_vipc_irq@176 {
		compatible = "qcom,ipcr-fifo-xprt";
		reg = <0x176>;
		interrupts = <0x0 0x142 0x1>;
		qcom,ipc-shm = <&ipc-shm>;
	};

	ipc-shm: shared-buffer@85af7000 {
		compatible = "qcom,hypervisor-shared-memory";
		phandle = <0x1e4>;
		reg = <0x0 0x85af7000 0x0 0x9000>;
		label = "ipc_shm";
		qcom,tx-is-first;
	};