Refactoring packages from .of. to .openflow.
diff --git a/openflow/ctl/src/main/java/org/onlab/onos/openflow/drivers/impl/package-info.java b/openflow/ctl/src/main/java/org/onlab/onos/openflow/drivers/impl/package-info.java
new file mode 100644
index 0000000..6e65ea5
--- /dev/null
+++ b/openflow/ctl/src/main/java/org/onlab/onos/openflow/drivers/impl/package-info.java
@@ -0,0 +1,4 @@
+/**
+ * OpenFlow base switch drivers implementations.
+ */
+package org.onlab.onos.openflow.drivers.impl;