spi_imx: set spi_master.dma_alignment = 4

Signed-off-by: NMike Rapoport <mike@compulab.co.il>
Cc: Bryan Wu <bryan.wu@analog.com>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

drivers/spi/spi_imx.c

@@ -186,6 +186,7 @@
 #define QUEUE_STOPPED			(1)
 
 #define IS_DMA_ALIGNED(x) 		(((u32)(x) & 0x03) == 0)
+#define DMA_ALIGNMENT			4
 /*-------------------------------------------------------------------------*/
 
 
@@ -1482,6 +1483,7 @@ static int __init spi_imx_probe(struct platform_device *pdev)
 
 	master->bus_num = pdev->id;
 	master->num_chipselect = platform_info->num_chipselect;
+	master->dma_alignment = DMA_ALIGNMENT;
 	master->cleanup = cleanup;
 	master->setup = setup;
 	master->transfer = transfer;