[Docs] Add header for files (#1181)

* [Docs] Add header for files

* change to OpenMMLab

* add headers for .cpp, .cu, .h, .cuh

* replace Open-MMLab with OpenMMLab

mmcv/ops/csrc/parrots/psamask_cuda.cu

+// Copyright (c) OpenMMLab. All rights reserved
 // Modified from
 // https://github.com/hszhao/semseg/blob/master/lib/psa/src
 

mmcv/ops/csrc/parrots/psamask_parrots.cpp

+// Copyright (c) OpenMMLab. All rights reserved
 #include <parrots/compute/aten.hpp>
 #include <parrots/extension.hpp>
 #include <parrots/foundation/ssattrs.hpp>

mmcv/ops/csrc/parrots/psamask_pytorch.h

+// Copyright (c) OpenMMLab. All rights reserved
 #ifndef PSAMASK_PYTORCH_H
 #define PSAMASK_PYTORCH_H
 #include <torch/extension.h>

mmcv/ops/csrc/parrots/roi_align.cpp

+// Copyright (c) OpenMMLab. All rights reserved
 #include "pytorch_cpp_helper.hpp"
 
 #ifdef MMCV_WITH_CUDA

mmcv/ops/csrc/parrots/roi_align_cuda.cu

+// Copyright (c) OpenMMLab. All rights reserved
 #include "pytorch_cuda_helper.hpp"
 #include "roi_align_cuda_kernel.cuh"
 

mmcv/ops/csrc/parrots/roi_align_parrots.cpp

+// Copyright (c) OpenMMLab. All rights reserved
 #include <parrots/compute/aten.hpp>
 #include <parrots/extension.hpp>
 #include <parrots/foundation/ssattrs.hpp>

mmcv/ops/csrc/parrots/roi_align_pytorch.h

+// Copyright (c) OpenMMLab. All rights reserved
 #ifndef ROI_ALIGN_PYTORCH_H
 #define ROI_ALIGN_PYTORCH_H
 #include <torch/extension.h>

mmcv/ops/csrc/parrots/roi_align_rotated.cpp

+// Copyright (c) OpenMMLab. All rights reserved
 #include "pytorch_cpp_helper.hpp"
 
 #ifdef MMCV_WITH_CUDA

mmcv/ops/csrc/parrots/roi_align_rotated_cuda.cu

+// Copyright (c) OpenMMLab. All rights reserved
 #include "pytorch_cuda_helper.hpp"
 #include "roi_align_rotated_cuda_kernel.cuh"
 

mmcv/ops/csrc/parrots/roi_align_rotated_parrots.cpp

+// Copyright (c) OpenMMLab. All rights reserved
 #include <parrots/compute/aten.hpp>
 #include <parrots/extension.hpp>
 #include <parrots/foundation/ssattrs.hpp>

mmcv/ops/csrc/parrots/roi_align_rotated_pytorch.h

+// Copyright (c) OpenMMLab. All rights reserved
 #ifndef ROI_ALIGN_ROTATED_PYTORCH_H
 #define ROI_ALIGN_ROTATED_PYTORCH_H
 #include <torch/extension.h>

mmcv/ops/csrc/parrots/roi_pool.cpp

+// Copyright (c) OpenMMLab. All rights reserved
 #include "pytorch_cpp_helper.hpp"
 
 #ifdef MMCV_WITH_CUDA

mmcv/ops/csrc/parrots/roi_pool_cuda.cu

+// Copyright (c) OpenMMLab. All rights reserved
 #include "pytorch_cuda_helper.hpp"
 #include "roi_pool_cuda_kernel.cuh"
 

mmcv/ops/csrc/parrots/roi_pool_parrots.cpp

+// Copyright (c) OpenMMLab. All rights reserved
 #include <parrots/compute/aten.hpp>
 #include <parrots/extension.hpp>
 #include <parrots/foundation/ssattrs.hpp>

mmcv/ops/csrc/parrots/roi_pool_pytorch.h

+// Copyright (c) OpenMMLab. All rights reserved
 #ifndef ROI_POOL_PYTORCH_H
 #define ROI_POOL_PYTORCH_H
 #include <torch/extension.h>

mmcv/ops/csrc/parrots/sync_bn.cpp

+// Copyright (c) OpenMMLab. All rights reserved
 #include "pytorch_cpp_helper.hpp"
 
 #ifdef MMCV_WITH_CUDA

mmcv/ops/csrc/parrots/sync_bn_cuda.cu

+// Copyright (c) OpenMMLab. All rights reserved
 #include "pytorch_cuda_helper.hpp"
 #include "sync_bn_cuda_kernel.cuh"
 

mmcv/ops/csrc/parrots/sync_bn_parrots.cpp

+// Copyright (c) OpenMMLab. All rights reserved
 #include <parrots/compute/aten.hpp>
 #include <parrots/extension.hpp>
 #include <parrots/foundation/ssattrs.hpp>

mmcv/ops/csrc/parrots/sync_bn_pytorch.h

+// Copyright (c) OpenMMLab. All rights reserved
 #ifndef SYNC_BN_PYTORCH_H
 #define SYNC_BN_PYTORCH_H
 #include <torch/extension.h>

mmcv/ops/csrc/parrots/tin_shift.cpp

+// Copyright (c) OpenMMLab. All rights reserved
 #include "pytorch_cpp_helper.hpp"
 
 #ifdef MMCV_WITH_CUDA