sepolicy: add common selinux policy inclusion
credits to omni, we only copied their work

It is required for sepolicy stuff in vendors/psx/build

Change-Id: I22c47febefd986274b53d69f89df6bff589c8ea0
Signed-off-by: Humberto Borba <humberos@gmail.com>

PS:
fixed a merging derp
we are not omni but psx