java_gen/prewritten: add 'ZERO/NONE' values to OFValueTypes
diff --git a/java_gen/pre-written/src/main/java/org/projectfloodlight/openflow/types/IpDscp.java b/java_gen/pre-written/src/main/java/org/projectfloodlight/openflow/types/IpDscp.java
index f311d9d..ec78315 100644
--- a/java_gen/pre-written/src/main/java/org/projectfloodlight/openflow/types/IpDscp.java
+++ b/java_gen/pre-written/src/main/java/org/projectfloodlight/openflow/types/IpDscp.java
@@ -72,6 +72,8 @@
 
     static final int LENGTH = 1;
 
+    public static final IpDscp NONE = DSCP_0;
+
     public static final IpDscp NO_MASK = DSCP_NO_MASK;
     public static final IpDscp FULL_MASK = DSCP_0;