IVGCVSW-4515 Add ConvertBf16ToFp32Layer and Ref workload support

Signed-off-by: Narumol Prangnawarat <narumol.prangnawarat@arm.com>
Change-Id: Ida6d7e1d2c9abe0618f8b711bab9d62c011090d6
diff --git a/src/backends/backendsCommon/WorkloadFactory.hpp b/src/backends/backendsCommon/WorkloadFactory.hpp
index dae58b6..8c22452 100644
--- a/src/backends/backendsCommon/WorkloadFactory.hpp
+++ b/src/backends/backendsCommon/WorkloadFactory.hpp
@@ -79,6 +79,9 @@
     virtual std::unique_ptr<IWorkload> CreateConstant(const ConstantQueueDescriptor& descriptor,
                                                       const WorkloadInfo& info) const;
 
+    virtual std::unique_ptr<IWorkload> CreateConvertBf16ToFp32(const ConvertBf16ToFp32QueueDescriptor& descriptor,
+                                                               const WorkloadInfo& info) const;
+
     virtual std::unique_ptr<IWorkload> CreateConvertFp16ToFp32(const ConvertFp16ToFp32QueueDescriptor& descriptor,
                                                                const WorkloadInfo& info) const;