arm64: dts: renesas: r8a77995: Connect Ethernet-AVB to IPMMU-RT

Add IPMMU-RT to the Ethernet-AVB device node.

Based on work by Magnus Damm for the r8a7795.

Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>

arch/arm64/boot/dts/renesas/r8a77995.dtsi

@@ -525,6 +525,7 @@
 			power-domains = <&sysc R8A77995_PD_ALWAYS_ON>;
 			resets = <&cpg 812>;
 			phy-mode = "rgmii-txid";
+			iommus = <&ipmmu_ds0 16>;
 			#address-cells = <1>;
 			#size-cells = <0>;
 			status = "disabled";