tools/arch/x86: intel_sdsi: Add support for reading meter certificates

Add option to read and decode On Demand meter certificates.

Link: https://github.com/intel/intel-sdsi/blob/master/meter-certificate.rst

Signed-off-by: David E. Box <david.e.box@linux.intel.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20221119002343.1281885-10-david.e.box@linux.intel.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>