ASoC: SOF: topology: Rename arguments in sof_parse_tokens()

ASoC: SOF: topology: Rename arguments in sof_parse_tokens()

Rename the count and priv_size arguments in sof_parse_tokens() and add
comments to clarify the arguments.

Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20220308164344.577647-17-ranjani.sridharan@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>