boards: samc21n_xpro: Convert to HWMv2

Port the board to HWMv2.

Signed-off-by: Gerson Fernando Budke <nandojve@gmail.com>

boards/atmel/sam0/samc21n_xpro/Kconfig.samc21n_xpro

@@ -0,0 +1,6 @@
+# Copyright (c) 2022 Kamil Serwus
+# Copyright (c) 2024 Gerson Fernando Budke <nandojve@gmail.com>
+# SPDX-License-Identifier: Apache-2.0
+
+config BOARD_SAMC21N_XPRO
+	select SOC_SAMC21N18A

boards/atmel/sam0/samc21n_xpro/board.yml

@@ -0,0 +1,5 @@
+board:
+  name: samc21n_xpro
+  vendor: atmel
+  socs:
+    - name: samc21n18a

boards/atmel/sam0/samc21n_xpro/doc/index.rst

@@ -1,4 +1,4 @@
-.. _atsamc21n_xpro:
+.. _samc21n_xpro:
 
 SAM C21N Xplained Pro Evaluation Kit
 ####################################
@@ -14,12 +14,12 @@ hardware.
 
 .. image:: img/atsamc21n_xpro.jpg
      :align: center
-     :alt: ATSAMC21N-XPRO
+     :alt: SAMC21N-XPRO
 
 Hardware
 ********
 
-- ATSAMC21N18A ARM Cortex-M0+ processor at 48 MHz
+- SAMC21N18A ARM Cortex-M0+ processor at 48 MHz
 - 32.768 kHz crystal oscillator
 - 256 KiB flash memory, 32 KiB of RAM, 8KB RRW flash
 - One yellow user LED
@@ -32,7 +32,7 @@ Hardware
 Supported Features
 ==================
 
-The atsamc21n_xpro board configuration supports the following hardware
+The samc21n_xpro board configuration supports the following hardware
 features:
 
 .. list-table::
@@ -78,7 +78,7 @@ features:
 Other hardware features are not currently supported by Zephyr.
 
 The default configuration can be found in the Kconfig
-``boards/arm/atsamc21n_xpro/atsamc21n_xpro_defconfig``.
+``boards/atmel/sam0/samc21n_xpro/samc21n_xpro_defconfig``.
 
 Pin Mapping
 ===========
@@ -147,7 +147,7 @@ Flashing
 
    .. zephyr-app-commands::
       :zephyr-app: samples/hello_world
-      :board: atsamc21n_xpro
+      :board: samc21n_xpro
       :goals: build
       :compact:
 
@@ -173,11 +173,11 @@ Flashing
 
    .. zephyr-app-commands::
       :zephyr-app: samples/hello_world
-      :board: atsamc21n_xpro
+      :board: samc21n_xpro
       :goals: flash
       :compact:
 
-   You should see "Hello World! atsamc21n_xpro" in your terminal.
+   You should see "Hello World! samc21n_xpro" in your terminal.
 
 References
 **********

boards/atmel/sam0/samc21n_xpro/samc21n_xpro.dts

@@ -8,12 +8,12 @@
 
 #include <atmel/samc21.dtsi>
 #include <atmel/samx2xx18.dtsi>
-#include "atsamc21n_xpro-pinctrl.dtsi"
+#include "samc21n_xpro-pinctrl.dtsi"
 #include <zephyr/dt-bindings/input/input-event-codes.h>
 
 / {
 	model = "SAM C21N Xplained Pro";
-	compatible = "atsamc21n,xpro", "atmel,samc21n18a", "atmel,samc21";
+	compatible = "samc21n,xpro", "atmel,samc21n18a", "atmel,samc21";
 
 	chosen {
 		zephyr,console = &sercom4;

boards/atmel/sam0/samc21n_xpro/samc21n_xpro.yaml

@@ -1,15 +1,16 @@
 # Copyright (c) 2022 Kamil Serwus
+# Copyright (c) 2024 Gerson Fernando Budke <nandojve@gmail.com>
 # SPDX-License-Identifier: Apache-2.0
-identifier: atsamc21n_xpro
+identifier: samc21n_xpro
 name: SAM C21N Xplained Pro
 type: mcu
 arch: arm
-ram: 32
-flash: 256
 toolchain:
   - zephyr
   - gnuarmemb
   - xtools
+flash: 256
+ram: 32
 supported:
   - adc
   - can

boards/atmel/sam0/samc21n_xpro/samc21n_xpro_defconfig

@@ -1,11 +1,10 @@
 # Copyright (c) 2022 Kamil Serwus
+# Copyright (c) 2024 Gerson Fernando Budke <nandojve@gmail.com>
 # SPDX-License-Identifier: Apache-2.0
-CONFIG_SOC_SERIES_SAMC21=y
-CONFIG_SOC_PART_NUMBER_SAMC21N18A=y
-CONFIG_BOARD_ATSAMC21N_XPRO=y
+
 CONFIG_BUILD_OUTPUT_HEX=y
+
 CONFIG_CONSOLE=y
-CONFIG_UART_CONSOLE=y
 CONFIG_SERIAL=y
+CONFIG_UART_CONSOLE=y
 CONFIG_UART_INTERRUPT_DRIVEN=y
-CONFIG_GPIO=y

boards/boards_legacy/arm/atsamc21n_xpro/Kconfig.board

@@ -1,8 +0,0 @@
-# SAM C21N Xplained Pro Board configuration
-
-# Copyright (c) 2022 Kamil Serwus
-# SPDX-License-Identifier: Apache-2.0
-
-config BOARD_ATSAMC21N_XPRO
-	bool "SAM C21N Xplained Pro"
-	depends on SOC_PART_NUMBER_SAMC21N18A

boards/boards_legacy/arm/atsamc21n_xpro/Kconfig.defconfig

@@ -1,8 +0,0 @@
-# SAM C21N Xplained Pro board configuration
-
-# Copyright (c) 2022 Kamil Serwus
-# SPDX-License-Identifier: Apache-2.0
-
-config BOARD
-	default "atsamc21n_xpro"
-	depends on BOARD_ATSAMC21N_XPRO