wakelock: fix Kernel error when compiling with CONFIG_WAKELOCK_STAT=n. I'm done with wakelock stats, users should their times enjoying their phones and stop looking at stuff that they don't compreehnd.

Signed-off-by: Francisco Franco <franciscofranco.1990@gmail.com>
Merge branch 'sm-4.3-JSS-CAF' into sm-4.3-JSS-CAF-Plus