boards: Convert stm32373c_eval to HWM v2

Port the board to HWMv2.

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

boards/boards_legacy/arm/stm32373c_eval/Kconfig.board

@@ -1,8 +0,0 @@
-# STM32373C-EVAL evaluation board configuration
-
-# Copyright (c) 2016 Open-RnD Sp. z o.o.
-# SPDX-License-Identifier: Apache-2.0
-
-config BOARD_STM32373C_EVAL
-	bool "STM32373C_EVAL Evaluation Board"
-	depends on SOC_STM32F373XC

boards/boards_legacy/arm/stm32373c_eval/Kconfig.defconfig

@@ -1,11 +0,0 @@
-# STM32373C-EVAL evaluation board configuration
-
-# Copyright (c) 2016 Open-RnD Sp. z o.o.
-# SPDX-License-Identifier: Apache-2.0
-
-if BOARD_STM32373C_EVAL
-
-config BOARD
-	default "stm32373c_eval"
-
-endif # BOARD_STM32373C_EVAL

boards/st/stm32373c_eval/Kconfig.stm32373c_eval

@@ -0,0 +1,5 @@
+# Copyright (c) 2016 Open-RnD Sp. z o.o.
+# SPDX-License-Identifier: Apache-2.0
+
+config BOARD_STM32373C_EVAL
+	select SOC_STM32F373XC

boards/st/stm32373c_eval/board.yml

@@ -0,0 +1,5 @@
+board:
+  name: stm32373c_eval
+  vendor: st
+  socs:
+    - name: stm32f373xc

boards/st/stm32373c_eval/stm32373c_eval_defconfig

@@ -1,11 +1,5 @@
 # SPDX-License-Identifier: Apache-2.0
 
-# Zephyr Kernel Configuration
-CONFIG_SOC_SERIES_STM32F3X=y
-
-# Platform Configuration
-CONFIG_SOC_STM32F373XC=y
-
 # Enable MPU
 CONFIG_ARM_MPU=y
 
@@ -15,6 +9,7 @@ CONFIG_HW_STACK_PROTECTION=y
 # Serial Drivers
 CONFIG_SERIAL=y
 CONFIG_UART_INTERRUPT_DRIVEN=y
+
 # enable console
 CONFIG_CONSOLE=y
 CONFIG_UART_CONSOLE=y