platform/x86/intel/vsec: Skip driverless features

If a feature lacks a corresponding driver and that feature is also a
supplier, registering it would be prevent the consumer driver from probing.
Introduces logic to skip such features during device registration.

Signed-off-by: David E. Box <david.e.box@linux.intel.com>
Link: https://lore.kernel.org/r/20250703022832.1302928-7-david.e.box@linux.intel.com


Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>