ARM: shmobile: r8a7794: Disable all IPMMU nodes by default

The r8a7794 IPMMU nodes for MX and DS are currently lacking
a line containing 'status = "disabled"', fix this by
making sure they are disabled like all other IPMMU nodes.
Signed-off-by: Magnus Damm <damm+renesas@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

arch/arm/boot/dts/r8a7794.dtsi

@@ -1097,6 +1097,7 @@ ipmmu_ds: mmu@e6740000 {
 		interrupts = <0 198 IRQ_TYPE_LEVEL_HIGH>,
 			     <0 199 IRQ_TYPE_LEVEL_HIGH>;
 		#iommu-cells = <1>;
+		status = "disabled";
 	};
 
 	ipmmu_mp: mmu@ec680000 {
@@ -1113,6 +1114,7 @@ ipmmu_mx: mmu@fe951000 {
 		interrupts = <0 222 IRQ_TYPE_LEVEL_HIGH>,
 			     <0 221 IRQ_TYPE_LEVEL_HIGH>;
 		#iommu-cells = <1>;
+		status = "disabled";
 	};
 
 	ipmmu_gp: mmu@e62a0000 {