code: def qnn_conv2d_legalize(attrs, inputs, types):
      """Default legalization is None."""
      return None
  
imports: import numpy
  from scipy import special
  import tvm
  from tvm import relay
  from tvm._ffi.base import TVMError
  from tvm.relay.qnn.op.canonicalizations import create_integer_lookup_op
  from ....target.x86 import target_has_features
  from ....topi.utils import is_target
  from ..None import op
label_desc: Use image node_id 6 for calling a global function with example usage: qnn_conv2d_legalize(attrs, inputs, types) and returns: None