imports: fix wavefrontmesh inclusion

Breaks Boot2Qt yocto build with following error:

  Project ERROR: Unknown module(s) in QT: quick-private
  | Makefile:153: recipe for target 'sub-wavefrontmesh-make_first' failed
  | make[2]: *** [sub-wavefrontmesh-make_first] Error 3

Change-Id: I6610a25a52b87949c7cfdfef9e39f9225c79e1dc
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@qt.io>

src/imports/imports.pro

@@ -4,8 +4,7 @@ SUBDIRS += \
     builtins \
     qtqml \
     models \
-    labsmodels \
-    wavefrontmesh
+    labsmodels
 
 qtConfig(thread): SUBDIRS += folderlistmodel
 qtHaveModule(sql): SUBDIRS += localstorage
@@ -18,7 +17,8 @@ qtHaveModule(quick) {
     SUBDIRS += \
         layouts \
         qtquick2 \
-        window
+        window \
+        wavefrontmesh
 
     qtHaveModule(testlib): SUBDIRS += testlib
     qtConfig(systemsemaphore): SUBDIRS += sharedimage