CONV_2D stride constraints
Currently, for Ethos-U55 and Ethos-U65, CONV_2D has the following constraints on stride:
Strides must fulfil the following criteria:
- Stride h must be between 1 and 3 when ofm height is greater than 1
- Stride w must be between 1 and 3 when ofm height is greater than 1 or stride w must be divisible by 2 or 3 and ifm width must be divisible by stride_w/2 or stride_w/3
and for Ethos-U85,
Stride values for both width and height must be in the range [1, 3]
Is it possible to relax this constraint to support up to stride 4 (or more) in both height and width? This would support a wider variety of models, for example ConvNeXt which uses a 4x4, stride 4 CONV_2D in its first ("patchify") layer. Thanks!