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/RefBatchNormalizationWorkload.cpp b/src/backends/reference/workloads/RefBatchNormalizationWorkload.cpp
index e106889..282374d 100644
--- a/src/backends/reference/workloads/RefBatchNormalizationWorkload.cpp
+++ b/src/backends/reference/workloads/RefBatchNormalizationWorkload.cpp
@@ -16,10 +16,10 @@
 RefBatchNormalizationWorkload::RefBatchNormalizationWorkload(const BatchNormalizationQueueDescriptor& descriptor,
                                                              const WorkloadInfo& info)
     : BaseWorkload(descriptor, info)
-    , m_Mean    (std::make_unique<ScopedCpuTensorHandle>(*(descriptor.m_Mean)))
-    , m_Variance(std::make_unique<ScopedCpuTensorHandle>(*(descriptor.m_Variance)))
-    , m_Beta    (std::make_unique<ScopedCpuTensorHandle>(*(descriptor.m_Beta)))
-    , m_Gamma   (std::make_unique<ScopedCpuTensorHandle>(*(descriptor.m_Gamma)))
+    , m_Mean    (std::make_unique<ScopedTensorHandle>(*(descriptor.m_Mean)))
+    , m_Variance(std::make_unique<ScopedTensorHandle>(*(descriptor.m_Variance)))
+    , m_Beta    (std::make_unique<ScopedTensorHandle>(*(descriptor.m_Beta)))
+    , m_Gamma   (std::make_unique<ScopedTensorHandle>(*(descriptor.m_Gamma)))
 {}
 
 void RefBatchNormalizationWorkload::Execute() const