ARM: dts: OMAP4: Add IOMMU nodes

Add the IOMMU nodes for the DSP and IPU subsystems. The MMU
within the IPU sub-system also supports a bus error back
capability, not available on the DSP MMU.
Signed-off-by: Florian Vaussard <florian.vaussard@epfl.ch>
[s-anna@ti.com: IPU bus error back addition]
Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/boot/dts/omap4.dtsi

@@ -467,6 +467,21 @@ mmc5: mmc@480d5000 {
 			dma-names = "tx", "rx";
 		};
 
+		mmu_dsp: mmu@4a066000 {
+			compatible = "ti,omap4-iommu";
+			reg = <0x4a066000 0x100>;
+			interrupts = <GIC_SPI 28 IRQ_TYPE_LEVEL_HIGH>;
+			ti,hwmods = "mmu_dsp";
+		};
+
+		mmu_ipu: mmu@55082000 {
+			compatible = "ti,omap4-iommu";
+			reg = <0x55082000 0x100>;
+			interrupts = <GIC_SPI 100 IRQ_TYPE_LEVEL_HIGH>;
+			ti,hwmods = "mmu_ipu";
+			ti,iommu-bus-err-back;
+		};
+
 		wdt2: wdt@4a314000 {
 			compatible = "ti,omap4-wdt", "ti,omap3-wdt";
 			reg = <0x4a314000 0x80>;