[Neuron] Adding support for adding/ overriding neuron configuration a… (#8062)

Co-authored-by: Harsha Bikki <harbikh@amazon.com>

vllm/model_executor/layers/quantization/__init__.py

@@ -22,6 +22,8 @@ from vllm.model_executor.layers.quantization.gptq_marlin import (
 from vllm.model_executor.layers.quantization.gptq_marlin_24 import (
     GPTQMarlin24Config)
 from vllm.model_executor.layers.quantization.marlin import MarlinConfig
+from vllm.model_executor.layers.quantization.neuron_quant import (
+    NeuronQuantConfig)
 from vllm.model_executor.layers.quantization.qqq import QQQConfig
 from vllm.model_executor.layers.quantization.squeezellm import SqueezeLLMConfig
 from vllm.model_executor.layers.quantization.tpu_int8 import Int8TpuConfig
@@ -46,6 +48,7 @@ QUANTIZATION_METHODS: Dict[str, Type[QuantizationConfig]] = {
     "bitsandbytes": BitsAndBytesConfig,
     "qqq": QQQConfig,
     "experts_int8": ExpertsInt8Config,
+    "neuron_quant": NeuronQuantConfig,
 }