t0lte: move advanced settings to common

Change-Id: Icceb60282371cb878119b35c4324598f5e0038dc
t0lte: init: set permissions on epen_saving_mode

Change-Id: I579fcecdadfd74b6a673161e244e916c97a5cad0
Merge branch 'cm-10.1' of github.com:CyanogenMod/android_device_samsung_t0lte into jb2