ARM: dts: Configure interconnect target module for dm814x tptc3

We can now probe devices with device tree only configuration using
ti-sysc interconnect target module driver. Let's configure the
module, but keep the legacy "ti,hwmods" peroperty to avoid new boot
time warnings. The legacy property will be removed in later patches
together with the legacy platform data.

Let's also correct the custom node name to use generic node name dma.

Cc: Graeme Smecher <gsmecher@threespeedlogic.com>
Cc: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/boot/dts/dm814x.dtsi

@@ -621,13 +621,29 @@ edma_tptc2: dma@0 {
 			};
 		};
 
-		edma_tptc3: tptc@49b00000 {
-			compatible = "ti,edma3-tptc";
+		target-module@49b00000 {
+			compatible = "ti,sysc-omap4", "ti,sysc";
 			ti,hwmods = "tptc3";
-			reg =	<0x49b00000 0x100000>;
+			reg = <0x49b00000 0x4>,
+			      <0x49b00010 0x4>;
+			reg-names = "rev", "sysc";
+			ti,sysc-mask = <SYSC_OMAP4_SOFTRESET>;
+			ti,sysc-midle = <SYSC_IDLE_FORCE>;
+			ti,sysc-sidle = <SYSC_IDLE_FORCE>,
+					<SYSC_IDLE_SMART>;
+			clocks = <&alwon_clkctrl DM814_TPTC3_CLKCTRL 0>;
+			clock-names = "fck";
+			#address-cells = <1>;
+			#size-cells = <1>;
+			ranges = <0x0 0x49b00000 0x100000>;
+
+			edma_tptc3: dma@0 {
+				compatible = "ti,edma3-tptc";
+				reg = <0 0x100000>;
 				interrupts = <115>;
 				interrupt-names = "edma3_tcerrint";
 			};
+		};
 
 		/* See TRM "Table 1-318. L4HS Instance Summary" */
 		l4hs: l4hs@4a000000 {