Make charger binary run as system instead of root. Since it needs to handle input key events, add input as a supplemental group in addition to system and graphics. Change-Id: Id1dc46f335087147b7d8cf674664c26f0b511de1 Signed-off-by: melvinstark3 <kartik3163@gmail.com> Signed-off-by: ronaxdevil <pratabidya.007@gmail.com>