i386/sev: Add a sev_snp_enabled() helper

Add a simple helper to check if the current guest type is SNP. Also have
SNP-enabled imply that SEV-ES is enabled as well, and fix up any places
where the sev_es_enabled() check is expecting a pure/non-SNP guest.

Signed-off-by: Michael Roth <michael.roth@amd.com>
Signed-off-by: Pankaj Gupta <pankaj.gupta@amd.com>
Message-ID: <20240530111643.1091816-9-pankaj.gupta@amd.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2 files changed