[Misc] Add SPDX-FileCopyrightText (#19100)

Signed-off-by: simon-mo <simon.mo@hey.com>

vllm/model_executor/layers/activation.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 """Custom activation functions."""
 import math
 from typing import Optional

vllm/model_executor/layers/fused_moe/__init__.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 
 from contextlib import contextmanager
 from typing import Any, Optional

vllm/model_executor/layers/fused_moe/cutlass_moe.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 """ CUTLASS based Fused MoE kernels."""
 from typing import Optional
 

vllm/model_executor/layers/fused_moe/deep_gemm_moe.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 import functools
 import importlib.util
 from typing import Optional

vllm/model_executor/layers/fused_moe/fused_batched_moe.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 """Fused batched MoE kernel."""
 from typing import Optional
 

vllm/model_executor/layers/fused_moe/fused_marlin_moe.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 """Fused MoE utilities for GPTQ."""
 import functools
 from typing import Optional

vllm/model_executor/layers/fused_moe/fused_moe.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 """Fused MoE kernel."""
 import functools
 import json

vllm/model_executor/layers/fused_moe/layer.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 
 import importlib
 from abc import abstractmethod

vllm/model_executor/layers/fused_moe/modular_kernel.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 from abc import ABC, abstractmethod
 from typing import Optional
 

vllm/model_executor/layers/fused_moe/moe_align_block_size.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 from typing import Optional
 
 import torch

vllm/model_executor/layers/fused_moe/moe_pallas.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 
 import torch
 import torch.nn.functional as F

vllm/model_executor/layers/fused_moe/moe_permute_unpermute.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 from typing import Optional
 
 import torch

vllm/model_executor/layers/fused_moe/moe_torch_iterative.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 
 import torch
 import torch.nn.functional as F

vllm/model_executor/layers/fused_moe/pplx_prepare_finalize.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 from typing import Optional
 
 import pplx_kernels as pplx

vllm/model_executor/layers/fused_moe/prepare_finalize.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 from typing import Optional
 
 import torch

vllm/model_executor/layers/fused_moe/rocm_aiter_fused_moe.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 from enum import IntEnum
 from functools import cache
 from typing import Optional

vllm/model_executor/layers/fused_moe/triton_deep_gemm_moe.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 from typing import Optional
 
 import torch

vllm/model_executor/layers/fused_moe/utils.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 from math import prod
 from typing import Optional
 

vllm/model_executor/layers/layernorm.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 """Custom normalization layers."""
 from typing import Optional, Union
 

vllm/model_executor/layers/lightning_attn.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 import torch
 from einops import rearrange