Validation: tests/conv incorrect results

[Hans Pabst]

To reproduce failures out of scripted execution, a recent feature about printing the command line was used (LIBXSMM_VERBOSE=4):

LIBXSMM_TARGET=hsw ./layer_example 1 7 7 8 2048 512 1 1 3 3 2 F L 0 0 64 64 4
LIBXSMM_TARGET=hsw ./layer_example 1 7 7 8 2048 512 1 1 3 3 2 F L 0 0 64 64 2
LIBXSMM_TARGET=clx ./layer_example 1 7 7 8 2048 512 1 1 3 3 2 F L 0 0 64 64 2

[Evangelos Georganas]

Commit da4662a should fix these ones

[Hans Pabst]

@egeor Thank you! Your fix allows the full collection of DeepBench layers to pass our tests.