smbios: extend smbios-entry-point-type with 'auto' value

later patches will use it to pick SMBIOS version at runtime
depending on configuration.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Acked-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Ani Sinha <anisinha@redhat.com>
Tested-by: Fiona Ebner <f.ebner@proxmox.com>
Message-Id: <20240314152302.2324164-16-imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

qapi/machine.json

@@ -1797,10 +1797,13 @@
 #
 # @64: SMBIOS version 3.0 (64-bit) Entry Point
 #
+# @auto: Either 2.x or 3.x SMBIOS version, 2.x if configuration can be
+#     described by it and 3.x otherwise (since: 9.0)
+#
 # Since: 7.0
 ##
 { 'enum': 'SmbiosEntryPointType',
-  'data': [ '32', '64' ] }
+  'data': [ '32', '64', 'auto' ] }
 
 ##
 # @MemorySizeConfiguration: