NXP Backend: Fix failing separable convolution test.

Author: MartinPavella

backends/nxp/tests/test_split_group_convolution.py

@@ -106,6 +106,7 @@ def test_split_group_convolution__2d(self, _, input_shape: list[int], group: int
         input_data = torch.randn(input_shape, dtype=torch.float32)
         out1 = original_module(input_data).detach().numpy()
         out2 = modified_module(input_data).detach().numpy()
+        print(np.abs(out1 - out2).max())
         assert np.allclose(out1, out2, atol=2.0e-7)
 
         # Make sure the graph can be correctly quantized and lowered to edge.