[Bugfix][Model] Enable torch.compile for StableLM (#54969)

Signed-off-by: Djordje Ramic <djoramic@amd.com>

vllm/model_executor/models/stablelm.py

@@ -29,6 +29,7 @@ import torch
 from torch import nn
 from transformers import StableLmConfig
 
+from vllm.compilation.decorators import support_torch_compile
 from vllm.config import CacheConfig, VllmConfig
 from vllm.distributed import get_pp_group, get_tensor_model_parallel_world_size
 from vllm.model_executor.layers.activation import SiluAndMul
@@ -213,6 +214,7 @@ class StablelmDecoderLayer(nn.Module):
         return hidden_states, residual
 
 
+@support_torch_compile
 class StableLMEpochModel(nn.Module):
     def __init__(self, *, vllm_config: VllmConfig, prefix: str = ""):
         super().__init__()