boards: Convert stm32wb5mm_dk to HWM v2

Port the board to HWMv2.

Signed-off-by: Guillaume Gautier <guillaume.gautier-ext@st.com>

boards/boards_legacy/arm/stm32wb5mm_dk/Kconfig.defconfig

@@ -1,16 +0,0 @@
-# STM32WB5MM-DK Discovery Development board configuration
-
-# Copyright (c) 2024 Javad Rahimipetroudi <javad.rahimipetroudi@mind.be>
-# SPDX-License-Identifier: Apache-2.0
-
-if BOARD_STM32WB5MM_DK
-
-config BOARD
-	default "stm32wb5mm_dk"
-
-choice BT_HCI_BUS_TYPE
-	default BT_STM32_IPM
-	depends on BT
-endchoice
-
-endif # BOARD_STM32WB5MM_DK

boards/st/stm32wb5mm_dk/Kconfig.stm32wb5mm_dk

@@ -1,8 +1,5 @@
-# STM32WB5MM-DK Discovery Development board configuration
-
 # Copyright (c) 2024 Javad Rahimipetroudi <javad.rahimipetroudi@mind.be>
 # SPDX-License-Identifier: Apache-2.0
 
 config BOARD_STM32WB5MM_DK
-	bool "stm32wb5mm-dk Discovery Development Board"
-	depends on SOC_STM32WB55XX
+	select SOC_STM32WB55XX

boards/st/stm32wb5mm_dk/board.yml

@@ -0,0 +1,5 @@
+board:
+  name: stm32wb5mm_dk
+  vendor: st
+  socs:
+    - name: stm32wb55xx

boards/st/stm32wb5mm_dk/doc/stm32wb5mm_dk.rst

@@ -126,7 +126,7 @@ The Zephyr STM32WB5MM-DK board configuration supports the following hardware fea
 Other hardware features are not yet supported on this Zephyr port.
 
 The default configuration can be found in the defconfig file:
-``boards/arm/stm32wb5mm_dk/stm32wb5mm_dk_defconfig``
+:zephyr_file:`boards/st/stm32wb5mm_dk/stm32wb5mm_dk_defconfig`
 
 Bluetooth and compatibility with STM32WB Copro Wireless Binaries
 ================================================================

boards/st/stm32wb5mm_dk/stm32wb5mm_dk_defconfig

@@ -1,6 +1,3 @@
-CONFIG_SOC_SERIES_STM32WBX=y
-CONFIG_SOC_STM32WB55XX=y
-
 # enable uart driver
 CONFIG_SERIAL=y