The patch defines AMD's Memory Encryption Information CPUID leaf and SEV status MSR. The complete description for CPUID leaf is available in APM volume 2, Section 15.34. Cc: Jordan Justen <jordan.l.justen@intel.com> Cc: Laszlo Ersek <lersek@redhat.com> Cc: Jeff Fan <jeff.fan@intel.com> Cc: Liming Gao <liming.gao@intel.com> Cc: Leo Duran <leo.duran@amd.com> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Brijesh Singh <brijesh.singh@amd.com> Reviewed-by: Jeff Fan <jeff.fan@intel.com>