Optimization Convolution op when using dnnl ep (#10051)
If Group attr = 1 allow the OneDNN library to optimize the memory
layout for the device the Convolution operator is being run on.
With out this optimization the default NCHW memory layout is used
on CPUs the NCHW memory layout can result in a significant performance
decrease.
Signed-off-by: George Nash <george.nash@intel.com>
