arm64: dts: renesas: r8a77980: Fix IPMMU VIP[01] nodes

Missing the renesas,ipmmu-main property on ipmmu_vip[01] nodes.

Fixes: 55697cb ("arm64: dts: renesas: r8a779{65,80,90}: Add IPMMU devices nodes)
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Link: https://lore.kernel.org/r/1587108543-23786-1-git-send-email-yoshihiro.shimoda.uh@renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

arch/arm64/boot/dts/renesas/r8a77980.dtsi

@@ -1318,13 +1318,15 @@
 		ipmmu_vip0: mmu@e7b00000 {
 			compatible = "renesas,ipmmu-r8a77980";
 			reg = <0 0xe7b00000 0 0x1000>;
+			renesas,ipmmu-main = <&ipmmu_mm 4>;
 			power-domains = <&sysc R8A77980_PD_ALWAYS_ON>;
 			#iommu-cells = <1>;
 		};
 
 		ipmmu_vip1: mmu@e7960000 {
 			compatible = "renesas,ipmmu-r8a77980";
 			reg = <0 0xe7960000 0 0x1000>;
+			renesas,ipmmu-main = <&ipmmu_mm 11>;
 			power-domains = <&sysc R8A77980_PD_ALWAYS_ON>;
 			#iommu-cells = <1>;
 		};