on implementing a 4" square 720 x 720 mipi dsi display on an nxp imx9 we get following error:

we generated the sdk with yocto following the guide on: i.MX Yocto Project User's Guide (nxp.com)
and build the yocto with DISTRO=fsl-imx-xwayland MACHINE=imx93-11x11-lpddr4x-evk & bitbake imx-image-full
although we build the full image, these driver files can't be found anywhere in the build....
Any idea?
Many thanks