root: Move all mounts to fstab and set proper secontexts

Change-Id: I98048ddc3c3f3e0343df06b74dc6c80d8eca0424
root: Clean up. Remove scripts that remount system/unneeded

Change-Id: Ia79c46f947b53c81337492e888a8b23d904ebceb
sec_config: Allow sensors group process to QMI Sensor services

Enable Sensors QMI services for sensors process groups.

Change-Id: Id434384ff3c08cdcf3ef434fcd1380053918bd37
codecs: TEMP disable ffmpeg

Change-Id: I77dc0ce6d0d0d5c33c0b468509f00f084dc7c97c