jump-label: initialize jump-label subsystem much earlier

Initialize jump_labels much, much earlier, so they're available for use
during system setup.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>

diff --cc include/linux/jump_label.h
Simple merge

diff --cc init/main.c
Simple merge

diff --cc kernel/jump_label.c
Simple merge