Cleaning up application categories.

Change-Id: Id3c937323123b6089cedf7b31cd01151f6aca8e1
diff --git a/apps/drivermatrix/BUCK b/apps/drivermatrix/BUCK
index 41876bd..fa94a8b 100644
--- a/apps/drivermatrix/BUCK
+++ b/apps/drivermatrix/BUCK
@@ -13,7 +13,7 @@
 
 onos_app (
     title = 'Driver Support Matrix',
-    category = 'Utility',
+    category = 'GUI',
     url = 'http://onosproject.org',
     description = 'Extends the ONOS GUI with a view that allows the operator to visualize ' +
         'the currently loaded drivers.',