Modified for Android 4.3.

1. Use default init.rc.
2. Remove def_network_preference from overlay/frameworks/base/packages/SettingsProvider/res/values/defaults.xml.
Copy xboot from ingenic-xboot-updater
Merge branch 'master' of https://github.com/IngenicSemiconductor/device-ingenic-npm801
Replaced disk_preparing.sh by setup_fs.