LPM: Cleanup KitKat lpm.rc

Useless, Samsung KitKat init binary ignore this file
LPM: JellyBean bootloader compatibility to KitKat

Changing "lpcharge=1" to "androidboot.mode=charger" will make
Samsung KitKat LPM work correctly

By hijacking cmdline, we can also change KitKat bootloader SELinux
mode from enforcing to permissive or disabled

Reference:
https://wiki.archlinux.org/index.php/boot_debugging#Hijacking_cmdline