Fix error: invalid use of incomplete type ‘class Faust::MatPerm<double,...

Fix error: invalid use of incomplete type ‘class Faust::MatPerm<double, (FDevice)1u>’ when compiling error: invalid use of incomplete type ‘class Faust::MatPerm<double, (FDevice)1u>’

src/faust_linear_operator/GPU2/faust_TransformHelper_gpu.hpp

+#include "faust_MatButterfly_gpu.h"
+#include "faust_MatPerm_gpu.h"
+
 namespace Faust
 {
     template<typename FPP,FDevice DEVICE> class Transform;