dts: arm: silabs: Move efr32zg23 to xg23 directory

Introduce subdirectory for xg23 socs.

Signed-off-by: Aksel Skauge Mellbye <aksel.mellbye@silabs.com>

Author: asmellby

boards/silabs/radio_boards/xg23_rb4210a/xg23_rb4210a.dts

@@ -5,7 +5,7 @@
  */
 
 /dts-v1/;
-#include <silabs/efr32zg23b020f512im48.dtsi>
+#include <silabs/xg23/efr32zg23b020f512im48.dtsi>
 #include <zephyr/dt-bindings/input/input-event-codes.h>
 #include <zephyr/dt-bindings/regulator/silabs_dcdc.h>
 #include "xg23_rb4210a-pinctrl.dtsi"

dts/arm/silabs/xg23/efr32xg23.dtsi

@@ -0,0 +1,25 @@
+/*
+ * Copyright (c) 2025 Silicon Laboratories Inc.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <silabs/xg23/xg23.dtsi>
+
+/ {
+	soc {
+		radio: radio@b0000000 {
+			compatible = "silabs,series2-radio";
+			reg = <0xb0000000 0x1000000>;
+			interrupts = <31 1>, <32 1>, <33 1>, <34 1>, <35 1>, <36 1>,
+				     <37 1>, <38 1>, <39 1>, <40 1>, <74 1>, <75 1>;
+			interrupt-names = "agc", "bufc", "frc_pri", "frc", "modem", "protimer",
+					  "rac_rsm", "rac_seq", "hostmailbox", "synth",
+					  "rfeca0", "rfeca1";
+			pa-initial-power-dbm = <10>;
+			pa-ramp-time-us = <10>;
+			pa-voltage-mv = <3300>;
+			pa-subghz = "highest";
+		};
+	};
+};

dts/arm/silabs/xg23/efr32zg23.dtsi

@@ -0,0 +1,7 @@
+/*
+ * Copyright (c) 2025 Silicon Laboratories Inc.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <silabs/xg23/efr32xg23.dtsi>

dts/arm/silabs/efr32zg23b020f512im48.dtsi renamed to dts/arm/silabs/xg23/efr32zg23b020f512im48.dtsi

@@ -5,17 +5,16 @@
  */
 
 #include <mem.h>
-#include <silabs/efr32xg23.dtsi>
+#include <silabs/xg23/efr32zg23.dtsi>
 
 / {
 	sram0: memory@20000000 {
 		reg = <0x20000000 DT_SIZE_K(64)>;
 	};
 
 	soc {
-		compatible = "silabs,efr32zg23b020f512im48",
-					"silabs,efr32zg23", "silabs,efr32",
-					"simple-bus";
+		compatible = "silabs,efr32zg23b020f512im48", "silabs,efr32zg23", "silabs,xg23",
+			     "silabs,efr32", "simple-bus";
 	};
 };
 

dts/arm/silabs/efr32xg23.dtsi renamed to dts/arm/silabs/xg23/xg23.dtsi

@@ -480,20 +480,6 @@
 			clocks = <&cmu CLOCK_ACMP0 CLOCK_BRANCH_EM01GRPACLK>;
 			status = "disabled";
 		};
-
-		radio: radio@b0000000 {
-			compatible = "silabs,series2-radio";
-			reg = <0xb0000000 0x1000000>;
-			interrupts = <31 1>, <32 1>, <33 1>, <34 1>, <35 1>, <36 1>,
-				     <37 1>, <38 1>, <39 1>, <40 1>, <74 1>, <75 1>;
-			interrupt-names = "agc", "bufc", "frc_pri", "frc", "modem", "protimer",
-					  "rac_rsm", "rac_seq", "hostmailbox", "synth",
-					  "rfeca0", "rfeca1";
-			pa-initial-power-dbm = <10>;
-			pa-ramp-time-us = <10>;
-			pa-voltage-mv = <3300>;
-			pa-subghz = "highest";
-		};
 	};
 
 	hwinfo: hwinfo {