Add sepolicy bits needed for Treble

Credit for this patch goes to Vishal Bhoj <vishal.bhoj@linaro.org>
who basically was the original author and magician
who got things working.

I've only refactored and split up his changes to help
with the submissions.

Change-Id: Ie621f199ef3cdf53c3005b345a040d641060cc24
Signed-off-by: John Stultz <john.stultz@linaro.org>
8 files changed