ASoC: fsi: remove slave_id settings for DMAEngine

Current fsi sets dma_slave_config :: slave_id field for DMAEngine,
but it is no longer needed. Let's remove it.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

sound/soc/sh/fsi.c

@@ -1371,10 +1371,9 @@ static int fsi_dma_probe(struct fsi_priv *fsi, struct fsi_stream *io, struct dev
 				shdma_chan_filter, (void *)io->dma_id,
 				dev, is_play ? "tx" : "rx");
 	if (io->chan) {
-		struct dma_slave_config cfg;
+		struct dma_slave_config cfg = {};
 		int ret;
 
-		cfg.slave_id	= io->dma_id;
 		cfg.dst_addr	= 0; /* use default addr */
 		cfg.src_addr	= 0; /* use default addr */
 		cfg.direction	= is_play ? DMA_MEM_TO_DEV : DMA_DEV_TO_MEM;