[PATCH] Register the boot-cpu in the cpu maps earlier

Register the boot-cpu in the cpu maps earlier to allow the early printk to
work, and to fix an obscure deadlock at boot.

Signed-off-by: Stas Sergeev <stsp@aknet.ru>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>