[CK_BUILDER] Update copyright messages. (#3150)

* Update copyright messages.

Copyright messages should no longer include a year. This PR updates all 38 source files to the new format.

* Switch to (C) from unicode copyright symbol.

The unicodein comments  was causing compilation errors.

experimental/builder/test/conv/test_ckb_conv_fwd_1d_bf16.cpp

@@ -1,3 +1,6 @@
+// Copyright (C) Advanced Micro Devices, Inc., or its affiliates.
+// SPDX-License-Identifier: MIT
+
 #include "utils/ckb_conv_test_common.hpp"
 
 using namespace ck_tile::builder::test_utils;

experimental/builder/test/conv/test_ckb_conv_fwd_1d_fp16.cpp

@@ -1,3 +1,6 @@
+// Copyright (C) Advanced Micro Devices, Inc., or its affiliates.
+// SPDX-License-Identifier: MIT
+
 #include "utils/ckb_conv_test_common.hpp"
 
 using namespace ck_tile::builder::test_utils;

experimental/builder/test/conv/test_ckb_conv_fwd_1d_i8.cpp

@@ -1,3 +1,6 @@
+// Copyright (C) Advanced Micro Devices, Inc., or its affiliates.
+// SPDX-License-Identifier: MIT
+
 #include "utils/ckb_conv_test_common.hpp"
 
 using namespace ck_tile::builder::test_utils;

experimental/builder/test/conv/test_ckb_conv_fwd_2d_bf16.cpp

@@ -1,3 +1,6 @@
+// Copyright (C) Advanced Micro Devices, Inc., or its affiliates.
+// SPDX-License-Identifier: MIT
+
 #include "utils/ckb_conv_test_common.hpp"
 
 using namespace ck_tile::builder::test_utils;

experimental/builder/test/conv/test_ckb_conv_fwd_2d_fp16.cpp

@@ -1,3 +1,6 @@
+// Copyright (C) Advanced Micro Devices, Inc., or its affiliates.
+// SPDX-License-Identifier: MIT
+
 #include "utils/ckb_conv_test_common.hpp"
 
 using namespace ck_tile::builder::test_utils;

experimental/builder/test/conv/test_ckb_conv_fwd_2d_fp32.cpp

@@ -1,3 +1,6 @@
+// Copyright (C) Advanced Micro Devices, Inc., or its affiliates.
+// SPDX-License-Identifier: MIT
+
 #include "utils/ckb_conv_test_common.hpp"
 
 using namespace ck_tile::builder::test_utils;

experimental/builder/test/conv/test_ckb_conv_fwd_3d_bf16.cpp

@@ -1,3 +1,6 @@
+// Copyright (C) Advanced Micro Devices, Inc., or its affiliates.
+// SPDX-License-Identifier: MIT
+
 #include "utils/ckb_conv_test_common.hpp"
 
 using namespace ck_tile::builder::test_utils;

experimental/builder/test/conv/test_ckb_conv_fwd_3d_fp16.cpp

@@ -1,3 +1,6 @@
+// Copyright (C) Advanced Micro Devices, Inc., or its affiliates.
+// SPDX-License-Identifier: MIT
+
 #include "utils/ckb_conv_test_common.hpp"
 
 using namespace ck_tile::builder::test_utils;

experimental/builder/test/conv/test_ckb_conv_fwd_3d_fp32.cpp

@@ -1,3 +1,6 @@
+// Copyright (C) Advanced Micro Devices, Inc., or its affiliates.
+// SPDX-License-Identifier: MIT
+
 #include "utils/ckb_conv_test_common.hpp"
 
 using namespace ck_tile::builder::test_utils;