fsldma: add support to 36-bit physical address

Expand the dma_mask of fsldma device to 36-bit, indicating that the
DMA engine can deal with 36-bit physical address and does not need
the SWIOTLB to create bounce buffer for it when doing dma_map_*().
Signed-off-by: Li Yang <leoli@freescale.com>
Acked-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>

drivers/dma/fsldma.c

 /*
  * Freescale MPC85xx, MPC83xx DMA Engine support
  *
- * Copyright (C) 2007 Freescale Semiconductor, Inc. All rights reserved.
+ * Copyright (C) 2007-2010 Freescale Semiconductor, Inc. All rights reserved.
  *
  * Author:
  *   Zhang Wei <wei.zhang@freescale.com>, Jul 2007
@@ -1322,6 +1322,8 @@ static int __devinit fsldma_of_probe(struct platform_device *op,
 	fdev->common.device_control = fsl_dma_device_control;
 	fdev->common.dev = &op->dev;
 
+	dma_set_mask(&(op->dev), DMA_BIT_MASK(36));
+
 	dev_set_drvdata(&op->dev, fdev);
 
 	/*