Always prevent wake on home keypress when kl config does not contain WAKE

http://review.cyanogenmod.org/#/c/43124/ introduced a change in behaviour
where the home key could wake a device even if the kl config lacked
the WAKE option.  This fix restores the original behaviour.

Change-Id: I56fc23244957a5738823b5e59f0a719670b41f6d