update example script for export

Signed-off-by: Fridah-nv <201670829+Fridah-nv@users.noreply.github.com>

Author: Fridah-nv

examples/llm_ptq/hf_ptq.py

@@ -80,6 +80,7 @@
     "w4a8_awq": mtq.W4A8_AWQ_BETA_CFG,
     "nvfp4": mtq.NVFP4_DEFAULT_CFG,
     "nvfp4_awq": mtq.NVFP4_AWQ_LITE_CFG,
+    "nvfp4_mse": mtq.NVFP4_W4A4_WEIGHT_MSE_FP8_SWEEP_CFG,
     "fp8_pb_wo": mtq.FP8_2D_BLOCKWISE_WEIGHT_ONLY_CFG,
     "fp8_pc_pt": mtq.FP8_PER_CHANNEL_PER_TOKEN_CFG,
     "w4a8_nvfp4_fp8": mtq.W4A8_NVFP4_FP8_CFG,