Avoid potential round-off error caused by floating point

Change-Id: If1a6266c7a0951441de3fe444663a109bb819056
diff --git a/web/api/src/main/java/org/onosproject/rest/resources/ConfigProvider.java b/web/api/src/main/java/org/onosproject/rest/resources/ConfigProvider.java
index 496f97d..67929cf 100644
--- a/web/api/src/main/java/org/onosproject/rest/resources/ConfigProvider.java
+++ b/web/api/src/main/java/org/onosproject/rest/resources/ConfigProvider.java
@@ -102,7 +102,7 @@
     private static final String UNKNOWN = "unknown";
 
     // C-band has 4.4 THz (4,400 GHz) total bandwidth
-    private static final Frequency TOTAL = Frequency.ofTHz(4.4);
+    private static final Frequency TOTAL = Frequency.ofGHz(4_400);
 
     private CountDownLatch deviceLatch;