KVM: SEV: Introduce new min,max sev_es and sev_snp asid variables

KVM: SEV: Introduce new min,max sev_es and sev_snp asid variables

Introduce new min, max sev_es_asid and sev_snp_asid variables.

The new {min,max}_{sev_es,snp}_asid variables along with existing
{min,max}_sev_asid variable simplifies partitioning of the
SEV and SEV-ES+ ASID space.

Suggested-by: Sean Christopherson <seanjc@google.com>
Reviewed-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Ashish Kalra <ashish.kalra@amd.com>
Link: https://lore.kernel.org/r/1db48277e8e96a633d734786ea69bf830f014857.1755721927.git.ashish.kalra@amd.com
Signed-off-by: Sean Christopherson <seanjc@google.com>