Loki: Re-introduce enable_imports in scheduler config

src/ecwam/ecwam_loki_gpu.config

@@ -4,6 +4,7 @@ role = "kernel"
 expand =  true
 strict =  true
 replicate = true
+enable_imports = true
 
 # Ensure that we are never adding these to the tree, and thus
 # do not attempt to look up the source files for these.