ARM: dts: Configure interconnect target module for am4 qspi

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.

Cc: Jean Pihet <jean.pihet@newoldbits.com>
Acked-by: Jean Pihet <jean.pihet@newoldbits.com>
Tested-by: Keerthy <j-keerthy@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/boot/dts/am4372.dtsi

@@ -305,17 +305,35 @@ gpmc: gpmc@50000000 {
 			status = "disabled";
 		};
 
-		qspi: spi@47900000 {
-			compatible = "ti,am4372-qspi";
-			reg = <0x47900000 0x100>,
-			      <0x30000000 0x4000000>;
-			reg-names = "qspi_base", "qspi_mmap";
-			#address-cells = <1>;
-			#size-cells = <0>;
+		target-module@47900000 {
+			compatible = "ti,sysc-omap4", "ti,sysc";
 			ti,hwmods = "qspi";
-			interrupts = <0 138 0x4>;
-			num-cs = <4>;
-			status = "disabled";
+			reg = <0x47900000 0x4>,
+			      <0x47900010 0x4>;
+			reg-names = "rev", "sysc";
+			ti,sysc-sidle = <SYSC_IDLE_FORCE>,
+					<SYSC_IDLE_NO>,
+					<SYSC_IDLE_SMART>,
+					<SYSC_IDLE_SMART_WKUP>;
+			clocks = <&l3s_clkctrl AM4_L3S_QSPI_CLKCTRL 0>;
+			clock-names = "fck";
+			#address-cells = <1>;
+			#size-cells = <1>;
+			ranges = <0x0 0x47900000 0x1000>,
+				 <0x30000000 0x30000000 0x4000000>;
+
+			qspi: spi@0 {
+				compatible = "ti,am4372-qspi";
+				reg = <0 0x100>,
+				      <0x30000000 0x4000000>;
+				reg-names = "qspi_base", "qspi_mmap";
+				clocks = <&dpll_per_m2_div4_ck>;
+				clock-names = "fck";
+				#address-cells = <1>;
+				#size-cells = <0>;
+				interrupts = <0 138 0x4>;
+				num-cs = <4>;
+			};
 		};
 
 		dss: dss@4832a000 {