tpm: tpm_tis_lpc: Add support for AT97SC3204

The Atmel AT97SC3204 is also TIS compliant.
Modify the tpm_tis_lpc driver to check for the vid/did used by the
Atmel AT97SC3204 and report an appropriate description.

Signed-off-by: George McCollister <george.mccollister@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>