[Model] Support Pixtral models in the HF Transformers format (#9036)

vllm/transformers_utils/processor.py

@@ -1,3 +1,4 @@
+from functools import lru_cache
 from typing import Any, cast
 
 
@@ -37,6 +38,9 @@ def get_processor(
     return cast(ProcessorMixin, processor)
 
 
+cached_get_processor = lru_cache(get_processor)
+
+
 def get_image_processor(
     processor_name: str,
     *args: Any,