[CI][AMD] spec_decode:eagle skip FLASH_ATTN for deepseek on ROCm (#29827)

Signed-off-by: Divakar Verma <divakar.verma@amd.com>

tests/v1/e2e/test_spec_decode.py

@@ -414,7 +414,10 @@ def test_eagle_correctness(
             )
 
         if attn_backend == "FLASH_ATTN" and current_platform.is_rocm():
-            m.setenv("VLLM_ROCM_USE_AITER", "1")
+            if "deepseek" in model_setup[1].lower():
+                pytest.skip("FLASH_ATTN for deepseek not supported on ROCm platform")
+            else:
+                m.setenv("VLLM_ROCM_USE_AITER", "1")
 
         method, model_name, spec_model_name, tp_size = model_setup
         max_model_len = 2048