Use udev rules to set the CPU online. For memory, we let the kernel bring memory online automatically. This is preferred as udev rule processing might be delayed in a low memory situation, see: https://lwn.net/Articles/668944/
* Fix RPI issues with u-boot / firmware * Cleanup bluetooth handling * Use RC4 for u-boot on rpi4
* Install default to lib * Create hmip-rfusb.rules * Create etc-udev-rules.d.mount * Update hassos-config * Update configuration.md * Update rauc.sh * Add ln