Make binary deb package suggest rtl-wmbus.

The package can be used to receive broadcasted radio messages.

deb/control

@@ -16,6 +16,7 @@ Rules-Requires-Root: no
 Package: wmbusmeters
 Architecture: any
 Depends: ${shlibs:Depends}, ${misc:Depends}
+Suggest: rtl-wmbus
 Description: read wireless and wired M-BUS telegrams from utility meters
  Receives and decodes C1,T1 or S1 telegrams (using
  the wireless or wired mbus protocol) to acquire utility meter