/usr/lib/dracut/modules.d/ and I believe that's not possible on immutable distros ?
/usr is not writable so i doubt it will work unless there is an equivalent location in /etc you can place it or you can accomplish it with rpm-ostree initramfs.desktopIcon= to the location where you saved your icon at/usr. Seems like i'll be forced to make a custom image then ujust enable-virtualization and ujust enable-vfio
/etc/fstab or use KDE Partition Manager or GNOME Disks

/usr/lib/dracut/modules.d//usr/usr/etcrpm-ostree initramfs.desktop[Desktop Entry]
Name=Return to Gaming Mode
Exec=qdbus org.kde.Shutdown /Shutdown org.kde.Shutdown.logout
Icon=steamdeck-gaming-return
Terminal=false
Type=Application
StartupNotify=falseIcon=ujust enable-vfio/etc/fstab