fix model llama for split function in line 852 (#1941)

Author: zhuizhuzheming

mindnlp/transformers/models/llama/modeling_llama.py

@@ -849,7 +849,7 @@ def forward(
 
         hidden_states = outputs[0]
         if self.config.pretraining_tp > 1:
-            lm_head_slices = self.lm_head.weight.split(self.vocab_size // self.config.pretraining_tp, dim=0)
+            lm_head_slices = ops.split(self.lm_head.weight,self.vocab_size // self.config.pretraining_tp, dim=0)
             logits = [F.linear(hidden_states, lm_head_slices[i]) for i in range(self.config.pretraining_tp)]
             logits = ops.cat(logits, dim=-1)
         else: