sound/soc/sh/siu: Fixed undefined dma_length of scatter gather list

Without this patch, an undefined/random sg->dma_length is used and
the sound will be played/captured wrongly.
Signed-off-by: Markus Pietrek <markus.pietrek@emtrion.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

sound/soc/sh/siu_pcm.c

@@ -127,6 +127,7 @@ static int siu_pcm_wr_set(struct siu_port *port_info,
 	sg_init_table(&sg, 1);
 	sg_set_page(&sg, pfn_to_page(PFN_DOWN(buff)),
 		    size, offset_in_page(buff));
+	sg_dma_len(&sg) = size;
 	sg_dma_address(&sg) = buff;
 
 	desc = siu_stream->chan->device->device_prep_slave_sg(siu_stream->chan,
@@ -176,6 +177,7 @@ static int siu_pcm_rd_set(struct siu_port *port_info,
 	sg_init_table(&sg, 1);
 	sg_set_page(&sg, pfn_to_page(PFN_DOWN(buff)),
 		    size, offset_in_page(buff));
+	sg_dma_len(&sg) = size;
 	sg_dma_address(&sg) = buff;
 
 	desc = siu_stream->chan->device->device_prep_slave_sg(siu_stream->chan,