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/backendsCommon/WorkloadUtils.cpp b/src/backends/backendsCommon/WorkloadUtils.cpp
index 5886630..c8105ae 100644
--- a/src/backends/backendsCommon/WorkloadUtils.cpp
+++ b/src/backends/backendsCommon/WorkloadUtils.cpp
@@ -11,7 +11,7 @@
 namespace armnn
 {
 
-armnn::ConstTensor PermuteTensor(const ConstCpuTensorHandle* tensor,
+armnn::ConstTensor PermuteTensor(const ConstTensorHandle* tensor,
                                  const PermutationVector& permutationVector, void* permuteBuffer)
 {
     ARMNN_ASSERT_MSG(tensor, "Invalid input tensor");
@@ -130,7 +130,7 @@
     return weightPermutedInfo;
 }
 
-armnn::ConstTensor ConvertWeightTensorFromArmnnToAcl(const ConstCpuTensorHandle* weightTensor,
+armnn::ConstTensor ConvertWeightTensorFromArmnnToAcl(const ConstTensorHandle* weightTensor,
                                                      DataLayout dataLayout,
                                                      void* permuteBuffer)
 {