IVGCVSW-2997 Refactor reference LSTM workload

Signed-off-by: Nattapat Chaimanowong <nattapat.chaimanowong@arm.com>
Change-Id: I6883f878d9f701a55153292769d2fc0530d2529e
diff --git a/src/backends/reference/workloads/RefWorkloads.hpp b/src/backends/reference/workloads/RefWorkloads.hpp
index 7871a1b..8ffd348 100644
--- a/src/backends/reference/workloads/RefWorkloads.hpp
+++ b/src/backends/reference/workloads/RefWorkloads.hpp
@@ -51,7 +51,7 @@
 #include "Pooling2d.hpp"
 #include "RefFakeQuantizationFloat32Workload.hpp"
 #include "RefPermuteWorkload.hpp"
-#include "RefLstmFloat32Workload.hpp"
+#include "RefLstmWorkload.hpp"
 #include "RefConvertFp16ToFp32Workload.hpp"
 #include "RefConvertFp32ToFp16Workload.hpp"
 #include "RefMeanUint8Workload.hpp"