modified logger declaration

to print actual instance type.

Change-Id: I4f7f1f0bea51d6fdb586339569b884e6cfdd5d02
diff --git a/openflow/api/src/main/java/org/onlab/onos/openflow/controller/driver/AbstractOpenFlowSwitch.java b/openflow/api/src/main/java/org/onlab/onos/openflow/controller/driver/AbstractOpenFlowSwitch.java
index f710726..9228e39 100644
--- a/openflow/api/src/main/java/org/onlab/onos/openflow/controller/driver/AbstractOpenFlowSwitch.java
+++ b/openflow/api/src/main/java/org/onlab/onos/openflow/controller/driver/AbstractOpenFlowSwitch.java
@@ -45,8 +45,7 @@
  */
 public abstract class AbstractOpenFlowSwitch implements OpenFlowSwitchDriver {
 
-    private static Logger log =
-            LoggerFactory.getLogger(AbstractOpenFlowSwitch.class);
+    protected final Logger log = LoggerFactory.getLogger(getClass());
 
     protected Channel channel;