ARM: dts: Configure interconnect target module for am3 tptc2

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: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/boot/dts/am33xx.dtsi

@@ -269,12 +269,28 @@ edma_tptc1: dma@0 {
 			};
 		};
 
-		edma_tptc2: tptc@49a00000 {
-			compatible = "ti,edma3-tptc";
+		target-module@49a00000 {
+			compatible = "ti,sysc-omap4", "ti,sysc";
 			ti,hwmods = "tptc2";
-			reg =	<0x49a00000 0x100000>;
-			interrupts = <114>;
-			interrupt-names = "edma3_tcerrint";
+			reg = <0x49a00000 0x4>,
+			      <0x49a00010 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 = <&l3_clkctrl AM3_L3_TPTC2_CLKCTRL 0>;
+			clock-names = "fck";
+			#address-cells = <1>;
+			#size-cells = <1>;
+			ranges = <0x0 0x49a00000 0x100000>;
+
+			edma_tptc2: dma@0 {
+				compatible = "ti,edma3-tptc";
+				reg = <0 0x100000>;
+				interrupts = <114>;
+				interrupt-names = "edma3_tcerrint";
+			};
 		};
 
 		target-module@47810000 {