Change some code in roadm application.
1. Change inputPowerRange to powerRange in the port view page.
2. Replace the update Frequency methods in roadmUtil.

Change-Id: I19a840156d8cdcb9c142bd88a6b5a667bb135f77
diff --git a/apps/roadm/src/main/java/org/onosproject/roadm/RoadmUtil.java b/apps/roadm/src/main/java/org/onosproject/roadm/RoadmUtil.java
index d125c77..22e1791 100644
--- a/apps/roadm/src/main/java/org/onosproject/roadm/RoadmUtil.java
+++ b/apps/roadm/src/main/java/org/onosproject/roadm/RoadmUtil.java
@@ -30,12 +30,8 @@
     public static final String MESSAGE = "message";
     public static final String NA = "N/A";
     public static final String UNKNOWN = "Unknown";
-    public static final String NONE = "(none)";
     public static final String NO_ROWS_MESSAGE = "No items found";
 
-    public static final long GHZ = 1_000_000_000L;
-    public static final long THZ = 1_000_000_000_000L;
-
     private RoadmUtil() {
     }
 
@@ -46,7 +42,7 @@
      * @return GHz in string format
      */
     public static String asGHz(Frequency value) {
-        return value == null ? UNKNOWN : String.valueOf((double) value.asHz() / GHZ);
+        return value == null ? UNKNOWN : String.valueOf(value.asGHz());
     }
 
     /**
@@ -56,7 +52,7 @@
      * @return THz in string format
      */
     public static String asTHz(Frequency value) {
-        return value == null ? UNKNOWN : String.valueOf((double) value.asHz() / THZ);
+        return value == null ? UNKNOWN : String.valueOf(value.asTHz());
     }
 
     /**