IVGCVSW-1199 Disable auto-flattening of Compute Library tensors

This is one of the reasons why the tests in https://review.mlplatform.org/#/c/ml/armnn/+/237/
are failing (but not the only reason).

Change-Id: If485bade2a6dd013cba826cec71d748fc7747249
diff --git a/src/backends/aclCommon/ArmComputeTensorUtils.cpp b/src/backends/aclCommon/ArmComputeTensorUtils.cpp
index 9fb78f8..ba7cd14 100644
--- a/src/backends/aclCommon/ArmComputeTensorUtils.cpp
+++ b/src/backends/aclCommon/ArmComputeTensorUtils.cpp
@@ -40,7 +40,7 @@
     for (unsigned int i = 0; i < tensorShape.GetNumDimensions(); i++)
     {
         // Note that our dimensions are stored in the opposite order to ACL's.
-        shape.set(tensorShape.GetNumDimensions() - i - 1, tensorShape[i]);
+        shape.set(tensorShape.GetNumDimensions() - i - 1, tensorShape[i], false);
 
         // TensorShape::set() flattens leading ones, so that batch size 1 cannot happen.
         // arm_compute tensors expect this.