soundwire: bus: rename sdw_ida as sdw_bus_ida

soundwire: bus: rename sdw_ida as sdw_bus_ida

To avoid confusions with follow-up patches using a IDA mechanism for
peripheral 'device number' allocation, rename sdw_ida as sdw_bus_ida.

Pure rename, no functionality change.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20220823045004.2670658-2-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>