boards: Convert segger_trb_stm32f407 to HWM v2

Port the board to HWMv2.

Signed-off-by: Abderrahmane Jarmouni <abderrahmane.jarmouni-ext@st.com>

boards/boards_legacy/arm/segger_trb_stm32f407/Kconfig.defconfig

@@ -1,11 +0,0 @@
-# SEGGER-TRB-STM32F407 board configuration
-
-# Copyright (c) 2020, Erwin Rol <erwin@erwinrol.com>
-# SPDX-License-Identifier: Apache-2.0
-
-if BOARD_SEGGER_TRB_STM32F407
-
-config BOARD
-	default "segger_trb_stm32f407"
-
-endif # BOARD_SEGGER_TRB_STM32F407

boards/segger/segger_trb_stm32f407/Kconfig.segger_trb_stm32f407

@@ -1,8 +1,5 @@
-# SEGGER-TRB-STM32F407 board configuration
-
 # Copyright (c) 2020, Erwin Rol <erwin@erwinrol.com>
 # SPDX-License-Identifier: Apache-2.0
 
 config BOARD_SEGGER_TRB_STM32F407
-	bool "SEGGER STM32F407 Trace Reference Board"
-	depends on SOC_STM32F407XE
+	select SOC_STM32F407XE

boards/segger/segger_trb_stm32f407/board.yml

@@ -0,0 +1,5 @@
+board:
+  name: segger_trb_stm32f407
+  vendor: segger
+  socs:
+    - name: stm32f407xx

boards/segger/segger_trb_stm32f407/segger_trb_stm32f407_defconfig

@@ -1,8 +1,5 @@
 # SPDX-License-Identifier: Apache-2.0
 
-CONFIG_SOC_SERIES_STM32F4X=y
-CONFIG_SOC_STM32F407XE=y
-
 # Enable MPU
 CONFIG_ARM_MPU=y