ASoC: SOF: sof-client-probes: Only load the driver if IPC3 is used

ASoC: SOF: sof-client-probes: Only load the driver if IPC3 is used

The current implementation of probes only supports IPC3 and should not be
loaded for other IPC implementation.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Link: https://lore.kernel.org/r/20220712131022.1124-1-peter.ujfalusi@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>