ARM: at91/DT: add NAND + DMA property

Add the "atmel,nand-has-dma" property to NAND node for SoC that
can use the DMA to perform NAND accesses.
Use of this property was added in 1b7192658a08f70df0f290634fd7cd2ecb629fc9
(mtd: atmel_nand: add a new dt binding item for nand dma support).

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Boris BREZILLON <b.brezillon@overkiz.com>
diff --git a/arch/arm/boot/dts/at91sam9x5.dtsi b/arch/arm/boot/dts/at91sam9x5.dtsi
index 174219d..67e3206 100644
--- a/arch/arm/boot/dts/at91sam9x5.dtsi
+++ b/arch/arm/boot/dts/at91sam9x5.dtsi
@@ -790,6 +790,7 @@
 			atmel,pmecc-lookup-table-offset = <0x0 0x8000>;
 			atmel,nand-addr-offset = <21>;
 			atmel,nand-cmd-offset = <22>;
+			atmel,nand-has-dma;
 			pinctrl-names = "default";
 			pinctrl-0 = <&pinctrl_nand>;
 			gpios = <&pioD 5 GPIO_ACTIVE_HIGH