Fix broken maven build

Change-Id: Id02c84e675bce00f3ace9a2984c68db29713cfbb
diff --git a/core/api/src/main/java/org/onosproject/net/flow/instructions/ExtensionTreatmentType.java b/core/api/src/main/java/org/onosproject/net/flow/instructions/ExtensionTreatmentType.java
index 64395b2..9550597 100644
--- a/core/api/src/main/java/org/onosproject/net/flow/instructions/ExtensionTreatmentType.java
+++ b/core/api/src/main/java/org/onosproject/net/flow/instructions/ExtensionTreatmentType.java
@@ -61,7 +61,7 @@
         NICIRA_ENCAP_ETH_SRC(121),
         NICIRA_ENCAP_ETH_DST(122),
         NICIRA_ENCAP_ETH_TYPE(123),
-        P4_BMV2_ACTION(128);
+        BMV2_ACTION(128);
 
         private ExtensionTreatmentType type;