KVM: selftests: Switch to updated eVMCSv1 definition

Update Enlightened VMCS definition in selftests from KVM.

Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com>
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Sean Christopherson <seanjc@google.com>
Link: https://lore.kernel.org/r/20220830133737.1539624-14-vkuznets@redhat.com


Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>