Changed nomenclature from Broker to Registry.
diff --git a/net/api/src/main/java/org/onlab/onos/net/device/DeviceProviderRegistry.java b/net/api/src/main/java/org/onlab/onos/net/device/DeviceProviderRegistry.java
new file mode 100644
index 0000000..cff252e
--- /dev/null
+++ b/net/api/src/main/java/org/onlab/onos/net/device/DeviceProviderRegistry.java
@@ -0,0 +1,10 @@
+package org.onlab.onos.net.device;
+
+import org.onlab.onos.net.provider.ProviderRegistry;
+
+/**
+ * Abstraction of a device provider registry.
+ */
+public interface DeviceProviderRegistry
+ extends ProviderRegistry<DeviceProvider, DeviceProviderService> {
+}