IVGCVSW-6339 'IMemoryOptimizerStrategy Add backend capabilities'

* Added ExternallyManagedMemory capability, set false for backends
* Added MultiAxisPacking capability, set false for backends

Signed-off-by: Sadik Armagan <sadik.armagan@arm.com>
Change-Id: I96a2b66ed069a82552dae33f6e8ebe067bbd6c44
diff --git a/src/backends/backendsCommon/test/CompatibilityTests.cpp b/src/backends/backendsCommon/test/CompatibilityTests.cpp
index ff842e9..e1462e0 100644
--- a/src/backends/backendsCommon/test/CompatibilityTests.cpp
+++ b/src/backends/backendsCommon/test/CompatibilityTests.cpp
@@ -180,7 +180,9 @@
                           {"AsyncExecution", true},
                           {"ProtectedContentAllocation", false},
                           {"ConstantTensorsAsInputs", true},
-                          {"PreImportIOTensors", false}});
+                          {"PreImportIOTensors", false},
+                          {"ExternallyManagedMemory", false},
+                          {"MultiAxisPacking", false}});
 }
 
 #endif
@@ -197,7 +199,9 @@
                           {"AsyncExecution", false},
                           {"ProtectedContentAllocation", false},
                           {"ConstantTensorsAsInputs", false},
-                          {"PreImportIOTensors", false}});
+                          {"PreImportIOTensors", false},
+                          {"ExternallyManagedMemory", false},
+                          {"MultiAxisPacking", false}});
 }
 
 #endif
@@ -214,7 +218,9 @@
                           {"AsyncExecution", false},
                           {"ProtectedContentAllocation", true},
                           {"ConstantTensorsAsInputs", false},
-                          {"PreImportIOTensors", false}});
+                          {"PreImportIOTensors", false},
+                          {"ExternallyManagedMemory", false},
+                          {"MultiAxisPacking", false}});
 }
 
 #endif
diff --git a/src/backends/cl/ClBackend.hpp b/src/backends/cl/ClBackend.hpp
index 570d301..0a069b9 100644
--- a/src/backends/cl/ClBackend.hpp
+++ b/src/backends/cl/ClBackend.hpp
@@ -28,7 +28,9 @@
                                                      {"AsyncExecution", false},
                                                      {"ProtectedContentAllocation", true},
                                                      {"ConstantTensorsAsInputs", false},
-                                                     {"PreImportIOTensors", false}
+                                                     {"PreImportIOTensors", false},
+                                                     {"ExternallyManagedMemory", false},
+                                                     {"MultiAxisPacking", false}
                                              });
 
 class ClBackend : public IBackendInternal
diff --git a/src/backends/neon/NeonBackend.hpp b/src/backends/neon/NeonBackend.hpp
index 0ae28d8..20da73a 100644
--- a/src/backends/neon/NeonBackend.hpp
+++ b/src/backends/neon/NeonBackend.hpp
@@ -16,7 +16,9 @@
                                                      {"AsyncExecution", false},
                                                      {"ProtectedContentAllocation", false},
                                                      {"ConstantTensorsAsInputs", false},
-                                                     {"PreImportIOTensors", false}
+                                                     {"PreImportIOTensors", false},
+                                                     {"ExternallyManagedMemory", false},
+                                                     {"MultiAxisPacking", false}
                                              });
 
 
diff --git a/src/backends/reference/RefBackend.hpp b/src/backends/reference/RefBackend.hpp
index 1a79d70..28c1591 100644
--- a/src/backends/reference/RefBackend.hpp
+++ b/src/backends/reference/RefBackend.hpp
@@ -15,7 +15,9 @@
                                                     {"AsyncExecution", true},
                                                     {"ProtectedContentAllocation", false},
                                                     {"ConstantTensorsAsInputs", true},
-                                                    {"PreImportIOTensors", false}
+                                                    {"PreImportIOTensors", false},
+                                                    {"ExternallyManagedMemory", false},
+                                                    {"MultiAxisPacking", false}
                                              });
 
 const std::set<armnn::BackendCapability> oldCpuRefCapabilities {