libadf: add helper to set up a simple post

Change-Id: I381b47f924b02c208ea6f20cf887abdef1035830
Signed-off-by: Greg Hackmann <ghackmann@google.com>
Kitkat bring up.

* Set init.d permissions
* Include vendor ramdisk
* Add missing permissions and fix existent ones for interactive, add ondemand ones aswell. Yea Google derped it.

Signed-off-by: Carlo Savignano <stevewatersy@gmail.com>