fix DbrxFusedNormAttention missing cache_config (#5340)

Co-authored-by: team <calvinn.ng@ahrefs.com>

vllm/model_executor/models/dbrx.py

@@ -247,11 +247,12 @@ class DbrxFusedNormAttention(nn.Module):
     def __init__(
         self,
         config: DbrxConfig,
+        cache_config: Optional[CacheConfig] = None,
         quant_config: Optional[QuantizationConfig] = None,
     ):
         super().__init__()
         self.d_model = config.d_model
-        self.attn = DbrxAttention(config, quant_config)
+        self.attn = DbrxAttention(config, cache_config, quant_config)
         self.norm_1 = nn.LayerNorm(self.d_model)
         self.norm_2 = nn.LayerNorm(self.d_model)