ARM: DTS: da850: Enable DMA use for MMC0

Add the needed bindings for MMC0 in order to be able to utilize the DMA
instead of PIO mode.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Tested-by: Sushaanth Srirangapathi <sushaanth.s@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>

arch/arm/boot/dts/da850.dtsi

@@ -235,6 +235,8 @@ mmc0: mmc@1c40000 {
 			compatible = "ti,da830-mmc";
 			reg = <0x40000 0x1000>;
 			interrupts = <16>;
+			dmas = <&edma0 16 0>, <&edma0 17 0>;
+			dma-names = "rx", "tx";
 			status = "disabled";
 		};
 		ehrpwm0: ehrpwm@01f00000 {