Small fix for NPU Python cpp simple generate regarding eos tokens (#12501)

python/llm/src/ipex_llm/transformers/npu_models/convert.py

@@ -368,6 +368,10 @@ def simple_generate(
             eos = 0xffffffff
     else:
         eos = new_generate_kwargs["eos_token_id"]
+
+    if not isinstance(eos, list):
+        eos = [eos]
+
     output_tokens = []
     from .npu_llm_cpp import run_decode, run_prefill, reset
 
@@ -379,7 +383,7 @@ def simple_generate(
     time_t2 = time.perf_counter()
     output_tokens.append(torch.tensor([token]))
     for i in range(new_tokens - 1):
-        if token == eos:
+        if token in eos:
             break
         token = run_decode(self.model_ptr, token, self.vocab_size)
         if streamer is not None: