ARM: u300: augment device tree with DMA channels

This adds DMA channel assignments to the MMC/SD-controller
and the two UARTs already in the U300 device tree, as we
have now defined a way to obtain DMA channels from the
device tree.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

arch/arm/boot/dts/ste-u300.dts

@@ -185,6 +185,8 @@ uart0: serial@c0013000 {
 			reg = <0xc0013000 0x1000>;
 			interrupt-parent = <&vica>;
 			interrupts = <22>;
+			dmas = <&dmac 17 &dmac 18>;
+			dma-names = "tx", "rx";
 		};
 
 		uart1: serial@c0007000 {
@@ -192,6 +194,8 @@ uart1: serial@c0007000 {
 			reg = <0xc0007000 0x1000>;
 			interrupt-parent = <&vicb>;
 			interrupts = <20>;
+			dmas = <&dmac 38 &dmac 39>;
+			dma-names = "tx", "rx";
 		};
 
 		mmcsd: mmcsd@c0001000 {
@@ -206,6 +210,8 @@ mmcsd: mmcsd@c0001000 {
 			cd-gpios = <&gpio 12 0x4>;
 			cd-inverted;
 			vmmc-supply = <&ab3100_ldo_g_reg>;
+			dmas = <&dmac 14>;
+			dma-names = "rx";
 		};
 	};
 };