Add options to grub "Restart" , "shutdown" and "efi config"

[wuniversales]

I think it would be good to add some options to enable or disable these options.
Good job, thanks, regards

if [ ${grub_platform} == "efi" ]; then
menuentry "Menú efi" --class efi {
fwsetup
}
fi
menuentry "Reiniciar Sistema" --class restart reboot {
reboot
}
menuentry "Apagar Sistema" --class poweroff shutdown {
halt
}