Add device name property

Add GetProperties method, with a single "Name" properties into
the hashtable.
Use the device name property in the PAM module, and in the list test.

src/device.xml

@@ -54,6 +54,10 @@
 			<arg type="i" name="result" />
 		</signal>
 
+		<method name="GetProperties">
+			<arg type="a{ss}" name="properties" direction="out" />
+		</method>
+
 	</interface>
 </node>