IVGCVSW-3211 Refactor reference Rsqrt workload

Change-Id: Ia413c6b5352dbb3390e7d84e837a542c24ae8813
Signed-off-by: nikraj01 <nikhil.raj@arm.com>
diff --git a/src/backends/reference/backend.mk b/src/backends/reference/backend.mk
index 2822c30..0d2b65d 100644
--- a/src/backends/reference/backend.mk
+++ b/src/backends/reference/backend.mk
@@ -55,7 +55,7 @@
         workloads/RefReshapeWorkload.cpp \
         workloads/RefResizeBilinearFloat32Workload.cpp \
         workloads/RefResizeBilinearUint8Workload.cpp \
-        workloads/RefRsqrtFloat32Workload.cpp \
+        workloads/RefRsqrtWorkload.cpp \
         workloads/RefSoftmaxWorkload.cpp \
         workloads/RefSpaceToBatchNdWorkload.cpp \
         workloads/RefStridedSliceWorkload.cpp \