drivers: mcux_i2s: Use the DMA reload flag

Use the DMA reload flag to indicate we wish to use
a circular chain of DMA descriptors to reload DMA
receive buffers.

Signed-off-by: Mahesh Mahadevan <mahesh.mahadevan@nxp.com>
diff --git a/drivers/i2s/i2s_mcux_flexcomm.c b/drivers/i2s/i2s_mcux_flexcomm.c
index 4db69bc..7550dd7 100644
--- a/drivers/i2s/i2s_mcux_flexcomm.c
+++ b/drivers/i2s/i2s_mcux_flexcomm.c
@@ -377,8 +377,8 @@
 		blk_cfg->source_address = (uint32_t)&base->FIFORD;
 		blk_cfg->dest_address = (uint32_t)buffer[0];
 		blk_cfg->block_size = stream->cfg.block_size;
-		blk_cfg->source_gather_en = 1;
 		blk_cfg->next_block = &stream->dma_block[1];
+		blk_cfg->dest_reload_en = 1;
 
 		blk_cfg = &stream->dma_block[1];
 		memset(blk_cfg, 0, sizeof(struct dma_block_config));