Revert "sec-battery: Standardize the output of the "online" property"

* Breaks qi charging. Will need to revisit.

This reverts commit 92a39ea884f338f3c0a8f8175ca741f24413e235.

Change-Id: I16ec79718d5a87a2fde7aca339a92b9c063d6c56
Merge branch 'CyanogenMod/cm-11.0'