ASoC: Intel: fix error code cnl_set_dsp_D0()

Return -ETIMEDOUT if the dsp boot times out instead of returning
success.

Fixes: cb6a5528 ("ASoC: Intel: cnl: Add sst library functions for cnl platform")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Cezary Rojewski <cezary.rojewski@intel.com>
Link: https://lore.kernel.org/r/X9NEvCzuN+IObnTN@mwanda


Signed-off-by: Mark Brown <broonie@kernel.org>