platform/x86/intel/vsec: Add intel_vsec_register

Add and export intel_vsec_register() to allow the registration of Intel
extended capabilities from other drivers. Add check to look for memory
conflicts before registering a new capability. Since the vsec provider
may not be a PCI device, add a parent field to
intel_vsec_platform_info() to allow specifying the parent device for
device managed cleanup.

Signed-off-by: Gayatri Kammela <gayatri.kammela@linux.intel.com>
Signed-off-by: David E. Box <david.e.box@linux.intel.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20231129222132.2331261-8-david.e.box@linux.intel.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>