acpi: change TPM TIS data conditions

The device should be exposed if present. It shouldn't have an
undefined version (or else backend init failed, and device should fail
too). Finally, make the fields specific to TIS device model.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
