Link to dbus interfaces library for using generated code

Change-Id: Id1c45d8c66deb499a92bfd94bc271f378245da34
Signed-off-by: Vishwanatha Subbanna <vishwa@linux.vnet.ibm.com>
diff --git a/controller.cpp b/controller.cpp
index 656c9bf..4e83f58 100644
--- a/controller.cpp
+++ b/controller.cpp
@@ -62,7 +62,7 @@
 
     // Create the Physical LED objects for directing actions.
     // Need to save this else sdbusplus destructor will wipe this off.
-    auto obj = phosphor::led::Physical(bus, objPath, path);
+    phosphor::led::Physical led(bus, objPath, path);
 
     /** @brief Claim the bus */
     bus.request_name(busName.c_str());