Currently there is only one test and it only works on TPM v2. Update it
to work on v1.2 as well, using a new function to pick up the required
TPM.

Update sandbox to include both a v1.2 and v2 TPM so that this works.
Split out the existing test into two pieces, one for init and one for
the v2-only report_state feature.

Acked-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>