Qualcomm Technologies, Inc. G-link SPI Transport

Required properties:
-compatible : should be "qcom,glink-spi-xprt".
-label : the name of the subsystem this link connects to.

Optional properties:
-qcom,remote-fifo-config: Reference to the FIFO configuratio in the remote
			processor.
-qcom,qos-config: Reference to the qos configuration elements.It depends on
		ramp-time.
-qcom,ramp-time: Worst case time in microseconds to transition to this power
		state. Power states are numbered by array index position.

Example:

	glink_spi_xprt_wdsp: qcom,glink-spi-xprt-wdsp {
		compatible = "qcom,glink-spi-xprt";
		label = "wdsp";
		qcom,remote-fifo-config = <&glink_fifo_wdsp>;
		qcom,qos-config = <&glink_qos_wdsp>;
		qcom,ramp-time = <0x10>,
				     <0x20>,
				     <0x30>,
				     <0x40>;
	};

	glink_fifo_wdsp: qcom,glink-fifo-config-wdsp {
		compatible = "qcom,glink-fifo-config";
		qcom,out-read-idx-reg = <0x12000>;
		qcom,out-write-idx-reg = <0x12004>;
		qcom,in-read-idx-reg = <0x1200C>;
		qcom,in-write-idx-reg = <0x12010>;
	};

	glink_qos_wdsp: qcom,glink-qos-config-wdsp {
		compatible = "qcom,glink-qos-config";
		qcom,flow-info = <0x80 0x0>,
				 <0x70 0x1>,
				 <0x60 0x2>,
				 <0x50 0x3>;
		qcom,mtu-size = <0x800>;
		qcom,tput-stats-cycle = <0xa>;
	};
