IVGCVSW-5815 Generalise ConstCpuTensorHandle

* Generalises ConstCpuTensorHandle and inherited
  classes by removing 'Cpu' from aliases.
* New renamed classes: ConstTensorHandle, TensorHandle,
  ScopedTensorHandle, PassthroughTensorHandle,
  ConstPassthroughTensorHandle.

Signed-off-by: James Conroy <james.conroy@arm.com>
Change-Id: I1824e0e134202735fb77051f20a7252f161dfe16
diff --git a/src/backends/reference/workloads/RefTransposeConvolution2dWorkload.cpp b/src/backends/reference/workloads/RefTransposeConvolution2dWorkload.cpp
index 6341228..8665648 100644
--- a/src/backends/reference/workloads/RefTransposeConvolution2dWorkload.cpp
+++ b/src/backends/reference/workloads/RefTransposeConvolution2dWorkload.cpp
@@ -18,7 +18,7 @@
     BaseWorkload<TransposeConvolution2dQueueDescriptor>(descriptor, info)
 {
     // set up weights decoder
-    m_Weights = std::make_unique<ScopedCpuTensorHandle>(*(descriptor.m_Weight));
+    m_Weights = std::make_unique<ScopedTensorHandle>(*(descriptor.m_Weight));
     const TensorInfo& weightsInfo = m_Weights->GetTensorInfo();
 
     m_WeightsDecoder = MakeDecoder<float>(weightsInfo, m_Weights->Map(true));
@@ -27,7 +27,7 @@
     // set up biases decoder
     if (descriptor.m_Parameters.m_BiasEnabled)
     {
-        m_Biases = std::make_unique<ScopedCpuTensorHandle>(*(descriptor.m_Bias));
+        m_Biases = std::make_unique<ScopedTensorHandle>(*(descriptor.m_Bias));
         const TensorInfo& biasesInfo = m_Biases->GetTensorInfo();
         m_BiasesDecoder = MakeDecoder<float>(biasesInfo, m_Biases->Map(true));
     }