Add OCh signal type to optical path intent.
Revert changes to LINC-OE specialized flowmod handling.

Change-Id: Ic4f333a44b7cd8a3111bfcba87ea909943eec56d
diff --git a/core/api/src/main/java/org/onosproject/net/OchSignalType.java b/core/api/src/main/java/org/onosproject/net/OchSignalType.java
index d9dd786..9caf3f3 100644
--- a/core/api/src/main/java/org/onosproject/net/OchSignalType.java
+++ b/core/api/src/main/java/org/onosproject/net/OchSignalType.java
@@ -21,9 +21,9 @@
  */
 public enum OchSignalType {
     /**
-     * Represents fix grid.
+     * Represents fixed grid.
      */
-    FIX_GRID,
+    FIXED_GRID,
 
     /**
      * Represents flex grid.