[CI][AMD][BugFix] Skip tests in test_unquantized_backend_selection that should...

[CI][AMD][BugFix] Skip tests in test_unquantized_backend_selection that should not run on ROCm (#34655)
Signed-off-by: Randall Smith <Randall.Smith@amd.com>

tests/kernels/moe/test_unquantized_backend_selection.py

@@ -9,6 +9,7 @@ from vllm.model_executor.layers.fused_moe.oracle.unquantized import (
     UnquantizedMoeBackend,
     select_unquantized_moe_backend,
 )
+from vllm.platforms import current_platform
 
 
 @pytest.mark.parametrize(
@@ -65,6 +66,9 @@ def test_select_default_backend_by_platform(
     "vllm.model_executor.layers.fused_moe.oracle.unquantized.is_supported_config_trtllm_bf16",
     return_value=(True, None),
 )
+@pytest.mark.skipif(
+    not current_platform.is_cuda(), reason="Only supported on NVIDIA platforms."
+)
 def test_select_cuda_flashinfer_trtllm_backend(
     mock_has_flashinfer, mock_is_supported_trtllm, monkeypatch
 ):
@@ -101,6 +105,9 @@ def test_select_cuda_flashinfer_trtllm_backend(
     "vllm.model_executor.layers.fused_moe.oracle.unquantized.is_supported_config_trtllm_bf16",
     return_value=(False, None),
 )
+@pytest.mark.skipif(
+    not current_platform.is_cuda(), reason="Only supported on NVIDIA platforms."
+)
 def test_select_cuda_flashinfer_cutlass_backend(
     mock_has_flashinfer, mock_is_supported_trtllm, monkeypatch
 ):