ASoC: SOF: make struct snd_sof_widget IPC agnostic

ASoC: SOF: make struct snd_sof_widget IPC agnostic

Parse the UUID token and save it in the new uuid field in struct
snd_sof_widget. struct sof_ipc_comp_ext is no longer needed. So remove
it too.

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/20220308164344.577647-12-ranjani.sridharan@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>