Add initial dbus interface doc
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
diff --git a/dbus-interfaces.md b/dbus-interfaces.md
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+
+# Host IPMI
+
+## `/org/openbmc/HostIpmi`
+
+signals:
+
+ * `ReceivedMessage(seq : byte, netfn : byte, lun : byte, cmd : byte, data: array[byte])`
+
+methods:
+
+ * `sendMessage(seq : byte, netfn : byte, lun : byte, cmd : byte, cc : byte, data : array[byte])`
+
+ * method: `setAttention()`
+
+