[hotfix] fix sd vit import error (#5420)

* fix import error

* Update dpt_depth.py

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Co-authored-by: binmakeswell <binmakeswell@gmail.com>

examples/images/diffusion/ldm/modules/midas/midas/dpt_depth.py

@@ -2,7 +2,8 @@ import torch
 import torch.nn as nn
 
 from .base_model import BaseModel
-from .blocks import FeatureFusionBlock_custom, Interpolate, _make_encoder, forward_vit
+from .blocks import FeatureFusionBlock_custom, Interpolate, _make_encoder
+from .vit import forward_vit
 
 
 def _make_fusion_block(features, use_bn):