Add missing subsystem policy

BZ: 122982

When the PFW starts it loads subsystems using there corresponding
plugin. If the requested plugin is not found, the start fails. This is a
problem, as for host, the plugins are not compiled.

Add a command in the public API to ignore missing subsystem.

Change-Id: I7597e3fef33466638191ff70b76e7faa9f979418
Signed-off-by: Kevin Rocard <kevinx.rocard@intel.com>
Reviewed-on: http://android.intel.com:8080/118039
Reviewed-by: Centelles, Sylvain <sylvain.centelles@intel.com>
Tested-by: Barthes, FabienX <fabienx.barthes@intel.com>
Reviewed-by: cactus <cactus@intel.com>
Tested-by: cactus <cactus@intel.com>
4 files changed