Add macbook specific drivers to installation medium

The macbook specific kernel modules are compiled when creating the `initramfs` for the installation ISO but are also needed when compiling the kernel for the first time after running `setup-chroot`

- [ ] check logic that copies files to rootfs
- [ ] check logic that copies kernel modules to rootfs
- [ ] copy kernel modules to rootfs
- [ ] create modprobe overlay (if needed) and add info