[ trivial ] Fix typo

- Found duplicated TC name while creating GPU unittest cases

Resolves:
[arm64-v8a] Executable     : unittest_layers
ld: error: duplicate symbol: addition_w16a16
>>> defined at unittest_layers_addition.cpp:33 (../unittest/layers/unittest_layers_addition.cpp:33)
>>>            /home/sungsik/nntrainer/test/obj/local/arm64-v8a/objs-debug/unittest_layers/__/unittest/layers/unittest_layers_addition.o:(addition_w16a16)
>>> defined at unittest_layers_addition_cl.cpp:47 (../unittest/layers/unittest_layers_addition_cl.cpp:47)
>>>            /home/sungsik/nntrainer/test/obj/local/arm64-v8a/objs-debug/unittest_layers/__/unittest/layers/unittest_layers_addition_cl.o:(.bss.addition_w16a16+0x0)
clang++: error: linker command failed with exit code 1 (use -v to see invocation)

**Self evaluation:**
1. Build test:     [X]Passed [ ]Failed [ ]Skipped
2. Run test:     [X]Passed [ ]Failed [ ]Skipped

Signed-off-by: skykongkong8 <[email protected]>

test/unittest/layers/unittest_layers_addition_cl.cpp

@@ -7,6 +7,7 @@
  * @brief Addition Layer Test
  * @see	https://github.com/nnstreamer/nntrainer
  * @author Yash Singh <[email protected]>
+ * @author Sungsik Kong <[email protected]>
  * @bug No known bugs except for NYI items
  */
 #include <tuple>
@@ -30,25 +31,26 @@ GTEST_PARAMETER_TEST(AdditionGPU, LayerSemanticsGpu,
                      ::testing::Values(semantic_addition_gpu,
                                        semantic_addition_multi_gpu));
 
-auto addition_w32a32 = LayerGoldenTestParamType(
+auto addition_w32a32_gpu = LayerGoldenTestParamType(
   nntrainer::createLayer<nntrainer::AdditionLayerCL>, {}, "2:3:3:3,2:3:3:3",
   "added_w32a32.nnlayergolden", LayerGoldenTestParamOptions::DEFAULT, "nchw",
   "fp32", "fp32");
 
-auto addition_w32a32_2 = LayerGoldenTestParamType(
+auto addition_w32a32_2_gpu = LayerGoldenTestParamType(
   nntrainer::createLayer<nntrainer::AdditionLayerCL>, {}, "3:4:3:4,3:4:3:4",
   "added_w32a32_2.nnlayergolden", LayerGoldenTestParamOptions::DEFAULT, "nchw",
   "fp32", "fp32");
 
 GTEST_PARAMETER_TEST(AdditionGPU, LayerGoldenTest,
-                     ::testing::Values(addition_w32a32, addition_w32a32_2));
+                     ::testing::Values(addition_w32a32_gpu,
+                                       addition_w32a32_2_gpu));
 
 #ifdef ENABLE_FP16
-auto addition_w16a16 = LayerGoldenTestParamType(
+auto addition_w16a16_gpu = LayerGoldenTestParamType(
   nntrainer::createLayer<nntrainer::AdditionLayerCL>, {}, "2:3:3:3,2:3:3:3",
   "added_w16a16.nnlayergolden", LayerGoldenTestParamOptions::DEFAULT, "nchw",
   "fp16", "fp16");
 
 GTEST_PARAMETER_TEST(Addition16, LayerGoldenTest,
-                     ::testing::Values(addition_w16a16));
+                     ::testing::Values(addition_w16a16_gpu));
 #endif