arm64: dts: ti: k3-am65-main: Add DMA entries for main_spi0

Add DMA entry for main_spi0, that has SPI flash connected, for better
throughput and reduced CPU load.
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Signed-off-by: Tero Kristo <t-kristo@ti.com>

arch/arm64/boot/dts/ti/k3-am65-main.dtsi

@@ -189,6 +189,8 @@ main_spi0: spi@2100000 {
 		power-domains = <&k3_pds 137 TI_SCI_PD_EXCLUSIVE>;
 		#address-cells = <1>;
 		#size-cells = <0>;
+		dmas = <&main_udmap 0xc500>, <&main_udmap 0x4500>;
+		dma-names = "tx0", "rx0";
 	};
 
 	main_spi1: spi@2110000 {