bindings: mproc: add smdpkt.txt

Qualcomm Technologies, Inc. Shared Memory Packet Driver (smdpkt)

[Root level node]

Required properties:

-compatible : should be "qcom,smdpkt"

[Second level nodes]

qcom,smdpkt-port-names

Required properties:

-qcom,smdpkt-remote : the remote subsystem name

-qcom,smdpkt-port-name : the smd channel name

-qcom,smdpkt-dev-name : the smdpkt device name

Example:

	qcom,smdpkt {

		compatible = "qcom,smdpkt";

		qcom,smdpkt-data5-cntl {

			qcom,smdpkt-remote = "modem";

			qcom,smdpkt-port-name = "DATA5_CNTL";

			qcom,smdpkt-dev-name = "smdcntl0";

		};

		qcom,smdpkt-data6-cntl {

			qcom,smdpkt-remote = "modem";

			qcom,smdpkt-port-name = "DATA6_CNTL";

			qcom,smdpkt-dev-name = "smdcntl1";

		};

		qcom,smdpkt-cxm-qmi-port-8064 {

			qcom,smdpkt-remote = "wcnss";

			qcom,smdpkt-port-name = "CXM_QMI_PORT_8064";

			qcom,smdpkt-dev-name = "smd_cxm_qmi";

		};

		qcom,smdpkt-loopback {

			qcom,smdpkt-remote = "modem";

			qcom,smdpkt-port-name = "LOOPBACK";

			qcom,smdpkt-dev-name = "smd_pkt_loopback";

		};

	};