Do not crash when enumerating supported CPU architectures

SECURITY_INIT somehow ended up in x86_cpu_dev.init section.  That caused printk
in code which prints supported architectures to hit #GP due to non-canonical
address being used.
Signed-off-by: NPetr Vandrovec <petr@vandrovec.name>
Cc: thomas.petazzoni@free-electrons.com
Signed-off-by: NIngo Molnar <mingo@elte.hu>