add license in file (#303)

test/gemm/gemm_dl_fp16.cpp

+// SPDX-License-Identifier: MIT
+// Copyright (c) 2018-2022, Advanced Micro Devices, Inc. All rights reserved.
+
 #include <algorithm>
 #include <cstdlib>
 #include <iostream>

test/gemm/gemm_dl_fp32.cpp

+// SPDX-License-Identifier: MIT
+// Copyright (c) 2018-2022, Advanced Micro Devices, Inc. All rights reserved.
+
 #include <algorithm>
 #include <cstdlib>
 #include <iostream>

test/gemm/gemm_dl_int8.cpp

+// SPDX-License-Identifier: MIT
+// Copyright (c) 2018-2022, Advanced Micro Devices, Inc. All rights reserved.
+
 #include <algorithm>
 #include <cstdlib>
 #include <iostream>

test/gemm/gemm_util.hpp

+// SPDX-License-Identifier: MIT
+// Copyright (c) 2018-2022, Advanced Micro Devices, Inc. All rights reserved.
+
 #pragma once
 
 #include "ck/ck.hpp"

test/gemm/gemm_xdl_bf16.cpp

+// SPDX-License-Identifier: MIT
+// Copyright (c) 2018-2022, Advanced Micro Devices, Inc. All rights reserved.
+
 #include <algorithm>
 #include <cstdlib>
 #include <iostream>

test/gemm/gemm_xdl_fp16.cpp

+// SPDX-License-Identifier: MIT
+// Copyright (c) 2018-2022, Advanced Micro Devices, Inc. All rights reserved.
+
 #include <algorithm>
 #include <cstdlib>
 #include <iostream>

test/gemm/gemm_xdl_fp32.cpp

+// SPDX-License-Identifier: MIT
+// Copyright (c) 2018-2022, Advanced Micro Devices, Inc. All rights reserved.
+
 #include <algorithm>
 #include <cstdlib>
 #include <iostream>

test/gemm/gemm_xdl_fp64.cpp

+// SPDX-License-Identifier: MIT
+// Copyright (c) 2018-2022, Advanced Micro Devices, Inc. All rights reserved.
+
 #include <algorithm>
 #include <cstdlib>
 #include <iostream>

test/gemm/gemm_xdl_int8.cpp

+// SPDX-License-Identifier: MIT
+// Copyright (c) 2018-2022, Advanced Micro Devices, Inc. All rights reserved.
+
 #include <algorithm>
 #include <cstdlib>
 #include <iostream>

test/gemm_reduce/gemm_reduce_fp16.cpp

+// SPDX-License-Identifier: MIT
+// Copyright (c) 2018-2022, Advanced Micro Devices, Inc. All rights reserved.
+
 #include <iostream>
 
 #include "profiler/include/profile_gemm_reduce_impl.hpp"

test/gemm_split_k/gemm_split_k.cpp

+// SPDX-License-Identifier: MIT
+// Copyright (c) 2018-2022, Advanced Micro Devices, Inc. All rights reserved.
+
 #include <iostream>
 #include <initializer_list>
 #include <cstdlib>

test/grouped_gemm/grouped_gemm_fp16.cpp

+// SPDX-License-Identifier: MIT
+// Copyright (c) 2018-2022, Advanced Micro Devices, Inc. All rights reserved.
+
 #include <iostream>
 #include <numeric>
 #include <initializer_list>

test/magic_number_division/magic_number_division.cpp

+// SPDX-License-Identifier: MIT
+// Copyright (c) 2018-2022, Advanced Micro Devices, Inc. All rights reserved.
+
 #include <iostream>
 #include <numeric>
 #include <initializer_list>

test/reduce/reduce_no_index.cpp

+// SPDX-License-Identifier: MIT
+// Copyright (c) 2018-2022, Advanced Micro Devices, Inc. All rights reserved.
+
 #include <getopt.h>
 
 #include "ck/library/host_tensor/host_common_util.hpp"

test/reduce/reduce_with_index.cpp

+// SPDX-License-Identifier: MIT
+// Copyright (c) 2018-2022, Advanced Micro Devices, Inc. All rights reserved.
+
 #include <getopt.h>
 
 #include "ck/library/host_tensor/host_common_util.hpp"

test/reference_conv_fwd/reference_conv_fwd.cpp

+// SPDX-License-Identifier: MIT
+// Copyright (c) 2018-2022, Advanced Micro Devices, Inc. All rights reserved.
+
 #include <cmath>
 #include <cstdlib>
 #include <numeric>

test/softmax/test_softmax_fp16.cpp

+// SPDX-License-Identifier: MIT
+// Copyright (c) 2018-2022, Advanced Micro Devices, Inc. All rights reserved.
+
 #include "gtest/gtest.h"
 #include "test_softmax_util.hpp"
 

test/softmax/test_softmax_fp32.cpp

+// SPDX-License-Identifier: MIT
+// Copyright (c) 2018-2022, Advanced Micro Devices, Inc. All rights reserved.
+
 #include "gtest/gtest.h"
 #include "test_softmax_util.hpp"
 

test/softmax/test_softmax_util.hpp

+// SPDX-License-Identifier: MIT
+// Copyright (c) 2018-2022, Advanced Micro Devices, Inc. All rights reserved.
+
 #include <vector>
 #include <iostream>
 #include <gtest/gtest.h>

test/space_filling_curve/space_filling_curve.cpp

+// SPDX-License-Identifier: MIT
+// Copyright (c) 2018-2022, Advanced Micro Devices, Inc. All rights reserved.
+
 #include <vector>
 #include <iostream>
 #include <numeric>