IVGCVSW-7624 GpuFsa Op: Add Softmax operator

* Added softmax operator support
* Added test cases

Signed-off-by: John Mcloughlin <john.mcloughlin@arm.com>
Change-Id: I51d530b110c4cb812f5aab31ad1ee4022d81d19e
diff --git a/src/backends/gpuFsa/test/GpuFsaLayerSupportTests.cpp b/src/backends/gpuFsa/test/GpuFsaLayerSupportTests.cpp
index b6f7f32..cb1ddd8 100644
--- a/src/backends/gpuFsa/test/GpuFsaLayerSupportTests.cpp
+++ b/src/backends/gpuFsa/test/GpuFsaLayerSupportTests.cpp
@@ -181,4 +181,25 @@
     CHECK(supported);
 }
 
+TEST_CASE("UNSUPPORTED_IsLayerSupportedGpuFsaSoftmax")
+{
+    TensorInfo inputInfo({ 2, 2 }, DataType::Float32);
+    TensorInfo outputInfo({ 2, 2 }, DataType::Float32);
+
+    SoftmaxDescriptor desc;
+    desc.m_Axis = 1;
+    desc.m_Beta = 1.0f;
+
+    GpuFsaLayerSupport supportChecker;
+    std::string reasonIfNotSupported;
+    auto supported = supportChecker.IsLayerSupported(LayerType::Softmax,
+                                                     {inputInfo, outputInfo},
+                                                     desc,
+                                                     EmptyOptional(),
+                                                     EmptyOptional(),
+                                                     reasonIfNotSupported);
+
+    CHECK(!supported);
+}
+
 }
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