boards: Convert steval_fcu001v1 to HWM v2

Port the board to HWMv2.

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

boards/boards_legacy/arm/steval_fcu001v1/Kconfig.board

@@ -1,8 +0,0 @@
-# STM32 Flight Controller Unit board configuration
-
-# Copyright (c) 2019 Linumiz
-# SPDX-License-Identifier: Apache-2.0
-
-config BOARD_STEVAL_FCU001V1
-	bool "STM32 Flight Controller Unit"
-	depends on SOC_STM32F401XC

boards/boards_legacy/arm/steval_fcu001v1/Kconfig.defconfig

@@ -1,11 +0,0 @@
-# STM32 Flight Controller Unit board configuration
-
-# Copyright (c) 2019 Linumiz
-# SPDX-License-Identifier: Apache-2.0
-
-if BOARD_STEVAL_FCU001V1
-
-config BOARD
-	default "steval_fcu001v1"
-
-endif # BOARD_STEVAL_FCU001V1

boards/st/steval_fcu001v1/Kconfig.steval_fcu001v1

@@ -0,0 +1,5 @@
+# Copyright (c) 2019 Linumiz
+# SPDX-License-Identifier: Apache-2.0
+
+config BOARD_STEVAL_FCU001V1
+	select SOC_STM32F401XC

boards/st/steval_fcu001v1/board.yml

@@ -0,0 +1,5 @@
+board:
+  name: steval_fcu001v1
+  vendor: st
+  socs:
+    - name: stm32f401xc

boards/st/steval_fcu001v1/steval_fcu001v1_defconfig

@@ -1,8 +1,5 @@
 # SPDX-License-Identifier: Apache-2.0
 
-CONFIG_SOC_SERIES_STM32F4X=y
-CONFIG_SOC_STM32F401XC=y
-
 # Enable MPU
 CONFIG_ARM_MPU=y