d2/jf: Enable overlays

* Fix fw/base typo
* Enable config_deviceHardwareKeys with value of 7 (home,back,menu)

Change-Id: I42e470857e0d08dbd0e897f9d2f6b62c4b24dcc0
Signed-off-by: Brandon McAnsh <brandon.mcansh@gmail.com>
Merge "d2/jf: Enable overlays" into kitkat