arm64: dts: renesas: r8a774a1: Enable DMA for SCIF2

SCIF2 on RZ/G2M can be used with both DMAC1 and DMAC2.

Fixes: 3a3933a4 ("arm64: dts: renesas: r8a774a1: Add SCIF and HSCIF nodes")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

arch/arm64/boot/dts/renesas/r8a774a1.dtsi

@@ -1011,6 +1011,9 @@ scif2: serial@e6e88000 {
 				 <&cpg CPG_CORE R8A774A1_CLK_S3D1>,
 				 <&scif_clk>;
 			clock-names = "fck", "brg_int", "scif_clk";
+			dmas = <&dmac1 0x13>, <&dmac1 0x12>,
+			       <&dmac2 0x13>, <&dmac2 0x12>;
+			dma-names = "tx", "rx", "tx", "rx";
 			power-domains = <&sysc R8A774A1_PD_ALWAYS_ON>;
 			resets = <&cpg 310>;
 			status = "disabled";