Utils: Fix qbs build

Change-Id: I06d4d10c2aae96b7ea4e58cde1d31162ad3818c9
Reviewed-by: Christian Kandeler <christian.kandeler@qt.io>

src/libs/utils/utils.qbs

@@ -133,11 +133,6 @@ Project {
             "fixedsizeclicklabel.h",
             "flowlayout.cpp",
             "flowlayout.h",
-            "fsengine/fileiconprovider.cpp",
-            "fsengine/fileiconprovider.h",
-            "fsengine/qtcfsengine.cpp",
-            "fsengine/qtcfsengine.h",
-            "fsengine/qtcfsengine_p.h",
             "functiontraits.h",
             "futuresynchronizer.cpp",
             "futuresynchronizer.h",
@@ -351,6 +346,25 @@ Project {
             "images/*.png",
         ]
 
+        Group {
+            name: "FSEngine"
+            prefix: "fsengine/"
+            files: [
+                "diriterator.h",
+                "fileiconprovider.cpp",
+                "fileiconprovider.h",
+                "fileiteratordevicesappender.h",
+                "fixedlistfsengine.h",
+                "fsengine.cpp",
+                "fsengine.h",
+                "fsenginehandler.cpp",
+                "fsenginehandler.h",
+                "fsengine_impl.cpp",
+                "fsengine_impl.h",
+                "rootinjectfsengine.h",
+            ]
+        }
+
         Group {
             name: "Theme"
             prefix: "theme/"