ARM: dts: am43xx: Add PRM data

Add PRM data for AM43xx SoC. Initially this is used to provide reset
support, but will be expanded later to support also powerdomain control.
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/boot/dts/am4372.dtsi

@@ -373,3 +373,29 @@
 
 #include "am437x-l4.dtsi"
 #include "am43xx-clocks.dtsi"
+
+&prcm {
+	prm_gfx: prm@400 {
+		compatible = "ti,am4-prm-inst", "ti,omap-prm-inst";
+		reg = <0x400 0x100>;
+		#reset-cells = <1>;
+	};
+
+	prm_per: prm@800 {
+		compatible = "ti,am4-prm-inst", "ti,omap-prm-inst";
+		reg = <0x800 0x100>;
+		#reset-cells = <1>;
+	};
+
+	prm_wkup: prm@2000 {
+		compatible = "ti,am4-prm-inst", "ti,omap-prm-inst";
+		reg = <0x2000 0x100>;
+		#reset-cells = <1>;
+	};
+
+	prm_device: prm@4000 {
+		compatible = "ti,am4-prm-inst", "ti,omap-prm-inst";
+		reg = <0x4000 0x100>;
+		#reset-cells = <1>;
+	};
+};