ASoC: topology: Set correct unload callback for graph type

Using the control_unload for graph type of elem will lead surprises on
module unload.

The correct callback to use is the dapm_route_unload.

Fixes: 31e92739 ("ASoC: topology: Use unload() op directly")
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Amadeusz Sławiński <amadeuszx.slawinski@linux.intel.com>
Link: https://lore.kernel.org/r/20230201112846.27707-3-peter.ujfalusi@linux.intel.com


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