Battery life extender patch from tni.andro

Signed-off-by: flar2 <asegaert@gmail.com>
USB fastcharge for Nexus 7 (2013)

Signed-off-by: flar2 <asegaert@gmail.com>
battery guage enhancements from tni.andro

Signed-off-by: flar2 <asegaert@gmail.com>
Update defconfig