virgl: fix stride + layer_stride inconsistency
We can do this if :
https://patchwork.kernel.org/patch/11170163/
https://patchwork.kernel.org/patch/11170165/
lands.
We can do this if :
https://patchwork.kernel.org/patch/11170163/
https://patchwork.kernel.org/patch/11170165/
lands.