Adds plumbing required for drivers based on tpm_tis to set hwrng quality.
Signed-off-by: NLouis Collard <louiscollard@chromium.org>
Reviewed-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com>