ARM: dts: AM33XX: Add SPI DMA support

Adds DMA resources to the AM33XX SPI nodes.
Signed-off-by: NMatt Porter <mporter@ti.com>
Signed-off-by: NJoel A Fernandes <joelagnel@ti.com>
Signed-off-by: NBenoit Cousson <bcousson@baylibre.com>

arch/arm/boot/dts/am33xx.dtsi

@@ -340,6 +340,11 @@
 			interrupts = <65>;
 			ti,spi-num-cs = <2>;
 			ti,hwmods = "spi0";
+			dmas = <&edma 16
+				&edma 17
+				&edma 18
+				&edma 19>;
+			dma-names = "tx0", "rx0", "tx1", "rx1";
 			status = "disabled";
 		};
 
@@ -351,6 +356,11 @@
 			interrupts = <125>;
 			ti,spi-num-cs = <2>;
 			ti,hwmods = "spi1";
+			dmas = <&edma 42
+				&edma 43
+				&edma 44
+				&edma 45>;
+			dma-names = "tx0", "rx0", "tx1", "rx1";
 			status = "disabled";
 		};