Activate HNC by default

Change-Id: I7d9f1cdd13738e70c111b8f14bd4d257ed80f9a3
diff --git a/script/korapxml2krill b/script/korapxml2krill
index 8de1a1a..7105233 100644
--- a/script/korapxml2krill
+++ b/script/korapxml2krill
@@ -464,6 +464,9 @@
 # Glemm
 push(@layers, ['Glemm', 'Morpho']);
 
+# HNC
+push(@layers, ['HNC', 'Morpho']);
+
 # LWC
 push(@layers, ['LWC', 'Dependency']);
 
@@ -1383,6 +1386,9 @@
   Glemm
     #Morpho
 
+  HNC
+    #Morpho
+
   LWC
     #Dependency