Update on "Use llm_config instead of args in export_llama functions"

Differential Revision: [D75484927](https://our.internmc.facebook.com/intern/diff/D75484927)

[ghstack-poisoned]

Author: jackzhxng

examples/models/llama/model.py

@@ -98,7 +98,7 @@ def __init__(self, llm_config: Optional[LlmConfig] = None):
             checkpoint = torch.load(checkpoint_path, map_location=device, mmap=True)
 
         # If given checkpoint is fairseq, convert to llama checkpoint.
-        fairseq2_checkpoint = llm_config.base.fairseq2
+        fairseq2_checkpoint = self.llm_config.base.fairseq2
         if fairseq2_checkpoint:
             print("Using fairseq2 checkpoint")
             checkpoint = convert_to_llama_checkpoint(checkpoint=checkpoint)