IVGCVSW-2049 + IVGCVSW-2051 Create the CL Mean Float workload and add
the unit tests

 * Created the ClFloatWorkload class
 * Added ClMeanValidate validation function
 * Added helper function to convert the reduction axes from the ArmNN
   format to ACL's
 * Added workload tests
 * Added some unit tests
 * These changes need the CL pin to be pointing at least to revision
   88d871028eeae57f9e4536d0329110eccb5e2890 (COMPMID-1574 Implement
   ReduceMean in OpenCL)

!android-nn-driver:155033

Change-Id: I694fd36be0458c90e158172afde045fcc88c32ae
diff --git a/src/backends/cl/workloads/ClWorkloads.hpp b/src/backends/cl/workloads/ClWorkloads.hpp
index 63de744..eeca403 100644
--- a/src/backends/cl/workloads/ClWorkloads.hpp
+++ b/src/backends/cl/workloads/ClWorkloads.hpp
@@ -16,6 +16,7 @@
 #include "ClL2NormalizationFloatWorkload.hpp"
 #include "ClLstmFloatWorkload.hpp"
 #include "ClMergerWorkload.hpp"
+#include "ClMeanWorkload.hpp"
 #include "ClMultiplicationWorkload.hpp"
 #include "ClNormalizationFloatWorkload.hpp"
 #include "ClPermuteWorkload.hpp"