mtd: nand: tango: Update DT binding description

Visually separate register ranges (address/size pairs) in reg prop.
Change DMA channel name, for consistency with other drivers.

Signed-off-by: Marc Gonzalez <marc_gonzalez@sigmadesigns.com>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
diff --git a/drivers/mtd/nand/tango_nand.c b/drivers/mtd/nand/tango_nand.c
index 28c7f47..78a65f6 100644
--- a/drivers/mtd/nand/tango_nand.c
+++ b/drivers/mtd/nand/tango_nand.c
@@ -636,7 +636,7 @@ static int tango_nand_probe(struct platform_device *pdev)
 	if (IS_ERR(clk))
 		return PTR_ERR(clk);
 
-	nfc->chan = dma_request_chan(&pdev->dev, "nfc_sbox");
+	nfc->chan = dma_request_chan(&pdev->dev, "rxtx");
 	if (IS_ERR(nfc->chan))
 		return PTR_ERR(nfc->chan);