arm64: dts: renesas: r8a77970: Enable IPMMU devices

Remove 'status = "disabled"' to make sure all IPMMU devices are enabled
in DT on the r8a77970 SoC.
Signed-off-by: Magnus Damm <damm+renesas@opensource.se>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
[simon: rebased]
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

arch/arm64/boot/dts/renesas/r8a77970.dtsi

@@ -567,7 +567,6 @@ ipmmu_ir: mmu@ff8b0000 {
 			renesas,ipmmu-main = <&ipmmu_mm 3>;
 			power-domains = <&sysc R8A77970_PD_A3IR>;
 			#iommu-cells = <1>;
-			status = "disabled";
 		};
 
 		ipmmu_mm: mmu@e67b0000 {
@@ -593,7 +592,6 @@ ipmmu_vi0: mmu@febd0000 {
 			renesas,ipmmu-main = <&ipmmu_mm 9>;
 			power-domains = <&sysc R8A77970_PD_ALWAYS_ON>;
 			#iommu-cells = <1>;
-			status = "disabled";
 		};
 
 		gic: interrupt-controller@f1010000 {