dmaengine: edma: fixed wrongly initialized data parameter to the edma callback

The "data" parameter passed indirectly to the edma_callback() should be
edma_chan and not the dma_chan.

This bug was so far harmless since the offset of struct dma_chan within struct
edma_chan is 0. However as soon as someone changes struct edma_chan this would
cause troubles.
Signed-off-by: Petr Kulhavy <petr@barix.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

drivers/dma/edma.c

@@ -805,7 +805,7 @@ static int edma_alloc_chan_resources(struct dma_chan *chan)
 	LIST_HEAD(descs);
 
 	a_ch_num = edma_alloc_channel(echan->ch_num, edma_callback,
-					chan, EVENTQ_DEFAULT);
+					echan, EVENTQ_DEFAULT);
 
 	if (a_ch_num < 0) {
 		ret = -ENODEV;