Move code from cpu_x86_init() to new QOM x86_cpu_initfn().
Also move mce_init() to cpu.c since it's used nowhere else.
Signed-off-by: Andreas Färber <afaerber@suse.de>
Embed CPUX86State as first member of X86CPU.
Distinguish between "x86_64-cpu" and "i386-cpu".
Drop cpu_x86_close() in favor of calling object_delete() directly.
For now let CPUClass::reset() call cpu_state_reset().
Signed-off-by: Andreas Färber <afaerber@suse.de>