just got Siggen's PM. I'm not familiar with NITdriod, but the source for my kernel is in extras
and in git repository https://garage.maemo.org/projects/kernel-power
If your kernel patches don't conflict with Maemo5 we could integrate them into my kernel,
otherwise there is the option to boot another kernel with kexec (I have added the latest patches but couldn't find time to really test them) from bootmenu.