latona: Change OpenGLES version to 3.0

We know OpenGL 3.0 is probably not going to work. This is just a test to see what happens.

Change-Id: Ia64c9e35e01629468925323cd75774aa1b3ebfc4
Signed-off-by: David Rodero <david@codiguiel.net>
latona: Add basic SELinux policies

- Added basic sepolicy to allow device to boot (there's a bug that
  crashes the device without it)
- Added other sepolicies to fix denial and tighten processes
- Uses bind mount instead of symlink because file_contexts uses real
  path

  Ported basic SELinux policies from aries-common, adapted for latona board.
  TODO: Fix the policies for latona. Add permissions for the rest of devices (camera, gps, etc).

Change-Id: I0c518e780c79d2ed38838f90b7ad30fa29e3b55c
Signed-off-by: David Rodero <david@codiguiel.net>