Qualcomm IPC Router SMD Transport

Required properties:
-compatible:		should be "qcom,ipc_router_smd_xprt"
-qcom,ch-name:		the SMD channel name used by the SMD transport
-qcom,xprt-remote:	string that defines the edge of the transport (PIL Name)
-qcom,xprt-linkid:	unique integer to identify the tier to which the link
			belongs to in the network and is used to avoid the
			routing loops while forwarding the broadcast messages
-qcom,xprt-version:	unique version ID used by SMD transport header

Optional properties:
-qcom,fragmented-data:	Indicate the SMD transport supports fragmented data
-qcom,disable-pil-loading: Disable PIL Loading of the remote subsystem

Example:
	qcom,ipc_router_modem_xprt {
		compatible = "qcom,ipc_router_smd_xprt";
		qcom,ch-name = "IPCRTR";
		qcom,xprt-remote = "modem";
		qcom,xprt-linkid = <1>;
		qcom,xprt-version = <1>;
		qcom,fragmented-data;
		qcom,disable-pil-loading;
	};

	qcom,ipc_router_q6_xprt {
		compatible = "qcom,ipc_router_smd_xprt";
		qcom,ch-name = "IPCRTR";
		qcom,xprt-remote = "adsp";
		qcom,xprt-linkid = <1>;
		qcom,xprt-version = <1>;
		qcom,fragmented-data;
	};