IVGCVSW-3554 Update workloads to pass Softmax Axis Parameter to Backends

 * Add check in CL and Neon to ensure axis is 1 otherwise
   return unsupported.
 * Edit CreateWorkload test and JsonPrinter test to ensure axis of 1.

Change-Id: I499b405532e26fefc2dd1c18b6dc6005813b5604
Signed-off-by: Francis Murtagh <francis.murtagh@arm.com>
diff --git a/src/backends/neon/workloads/NeonSoftmaxBaseWorkload.cpp b/src/backends/neon/workloads/NeonSoftmaxBaseWorkload.cpp
index b229bc4..8acb775 100644
--- a/src/backends/neon/workloads/NeonSoftmaxBaseWorkload.cpp
+++ b/src/backends/neon/workloads/NeonSoftmaxBaseWorkload.cpp
@@ -6,6 +6,7 @@
 #include "NeonSoftmaxBaseWorkload.hpp"
 
 #include <aclCommon/ArmComputeTensorUtils.hpp>
+#include <aclCommon/ArmComputeUtils.hpp>
 
 #include <arm_compute/runtime/NEON/functions/NESoftmaxLayer.h>
 
@@ -19,7 +20,8 @@
     const arm_compute::TensorInfo aclInputInfo = armcomputetensorutils::BuildArmComputeTensorInfo(input);
     const arm_compute::TensorInfo aclOutputInfo = armcomputetensorutils::BuildArmComputeTensorInfo(output);
 
-    return arm_compute::NESoftmaxLayer::validate(&aclInputInfo, &aclOutputInfo, descriptor.m_Beta);
+    unsigned int aclAxis = ComputeSoftmaxAclAxis(input);
+    return arm_compute::NESoftmaxLayer::validate(&aclInputInfo, &aclOutputInfo, descriptor.m_Beta, aclAxis);
 }
 
 } //namespace armnn