[ros-diffs] [cfinck] 32546: Put all the stuff from "ntoskrnl.rbuild" into a new file "ntoskrnl-generic.rbuild", which is then included by "ntoskrnl.rbuild". Simplifies building the kernel as the same stuff is also needed in "ntkrnlmp.rbuild", which now defines CONFIG_SMP and then just includes "ntoskrnl-generic.rbuild". Also added a disabled "ntkrnlmp.rbuild" entry to "ReactOS-generic.rbuild" (disabled, because building the SMP kernel is broken atm)