charger: Allow home key on newer devices to wake device

 * On newer devices, the home key button is usually mapped
   to KEY_HOMEPAGE. Allow it to wake the device.

Change-Id: I6423e4c6fb7992c77dc052a9f0aadae1fa8055dd
Merge remote-tracking branch 'CyanogenMod/cm-10.2' into cm-10.2