message: Use latest poplar convolution structure
diff: @@ -70,8 +70,10 @@ GetConvolutionParameters(const HloInstruction* inst) {
  unsigned int dw_x = window.dimensions(1).window_dilation();
  popconv::ConvParams params(dtype,
  - {n_b, n_y, n_x, n_i},
  - {f_y, f_x, n_o, n_i},
  + n_b,
  + {n_y, n_x},
  + {f_y, f_x},
  + n_i, n_o,
  {s_y, s_x},
  {pl_y, pl_x},
  {pu_y, pu_x},
  