[Fix] Use local ATTENTION registery to avoid conflict with other repo. (#375)

mmcls/models/builder.py

@@ -1,4 +1,5 @@
 from mmcv.cnn import MODELS as MMCV_MODELS
+from mmcv.cnn.bricks.registry import ATTENTION as MMCV_ATTENTION
 from mmcv.utils import Registry
 
 MODELS = Registry('models', parent=MMCV_MODELS)
@@ -9,6 +10,8 @@ HEADS = MODELS
 LOSSES = MODELS
 CLASSIFIERS = MODELS
 
+ATTENTION = Registry('attention', parent=MMCV_ATTENTION)
+
 
 def build_backbone(cfg):
     """Build backbone."""

mmcls/models/utils/attention.py

@@ -1,11 +1,11 @@
 import torch
 import torch.nn as nn
 import torch.nn.functional as F
-from mmcv.cnn.bricks.registry import ATTENTION
 from mmcv.cnn.bricks.transformer import build_dropout
 from mmcv.cnn.utils.weight_init import trunc_normal_
 from mmcv.runner.base_module import BaseModule
 
+from ..builder import ATTENTION
 from .helpers import to_2tuple