As of 2024Q1, loadable kernel modules are not being added automatically to the image - The customer should explicitly add the desired package to the image.
Please add to your local.conf\layer.conf the following line (assuming they’re building core-image-minimal):
IMAGE_INSTALL:append:pn-core-image-minimal = " kernel-module-cfg80211"
The result should be the generation of the target image with - /lib/modules/5.15.32-yocto-standard/kernel/net/wireless/cfg80211.ko