[Bugfix] fix modelopt exclude_modules name mapping (#24178)

Signed-off-by: Tomer Asida <57313761+tomeras91@users.noreply.github.com>
Co-authored-by: Cyrus Leung <tlleungac@connect.ust.hk>

vllm/model_executor/layers/mamba/mamba_mixer2.py

@@ -291,6 +291,7 @@ class MambaMixer2(MambaBase, CustomOp):
             output_size=self.conv_dim,
             bias=use_conv_bias,
             quant_config=None,
+            prefix=f"{prefix}.conv1d",
         )
         # unsqueeze to fit conv1d weights shape into the linear weights shape.
         # Can't do this in `weight_loader` since it already exists in
@@ -303,6 +304,7 @@ class MambaMixer2(MambaBase, CustomOp):
             output_size=intermediate_size + self.conv_dim + self.num_heads,
             bias=use_bias,
             quant_config=quant_config,
+            prefix=f"{prefix}.in_proj",
         )
 
         # - because in_proj is a concatenation of 3 weights, we
@@ -402,6 +404,7 @@ class MambaMixer2(MambaBase, CustomOp):
             bias=use_bias,
             input_is_parallel=True,
             quant_config=quant_config,
+            prefix=f"{prefix}.out_proj",
         )
 
         self.norm = Mixer2RMSNormGated(intermediate_size,