m68k: virt: Pass the configured cpu type via bootinfo instead of the default 68040
Goal
The m68k virt machine is really useful for testing m68k linux. Currently I'm using it to test my fixes for nommu 68000 kernels. I'm working on making the same kernel work on any 680x0 by detecting the cpu at boot time and fixing up the differences (i.e on 68000 the vector/frame is not passed on the stack during interrupts). Right now the virt machine passes the configuration info via bootinfo to the kernel and it always says the cpu is 68040 even if it's configured as something else.
It would be good to have the cpu in the bootinfo reflect what is actually configured.