This commit adds the device tree binding documentation for the GLINK SLATECOM transport(glink_slatecom_xprt). The documentation includes details about the properties, usage and examples of the binding. Change-Id: I12770ac197e1b62ebacf9c0e3445b559b5c1abcf Signed-off-by: Sudeepgoud Patil <quic_sudeepgo@quicinc.com>