boards: Convert nucleo_f411re to HWM v2

Port the board to HWMv2.

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

boards/boards_legacy/arm/nucleo_f411re/Kconfig.board

@@ -1,8 +0,0 @@
-# NUCLEO-64 F411RE board configuration
-
-# Copyright (c) 2016 Matthias Boesl
-# SPDX-License-Identifier: Apache-2.0
-
-config BOARD_NUCLEO_F411RE
-	bool "NUCLEO-64 F411RE Development Board"
-	depends on SOC_STM32F411XE

boards/st/nucleo_f411re/Kconfig.defconfig

@@ -5,9 +5,6 @@
 
 if BOARD_NUCLEO_F411RE
 
-config BOARD
-	default "nucleo_f411re"
-
 config SPI_STM32_INTERRUPT
 	default y
 	depends on SPI

boards/st/nucleo_f411re/Kconfig.nucleo_f411re

@@ -0,0 +1,5 @@
+# Copyright (c) 2016 Matthias Boesl
+# SPDX-License-Identifier: Apache-2.0
+
+config BOARD_NUCLEO_F411RE
+	select SOC_STM32F411XE

boards/st/nucleo_f411re/board.yml

@@ -0,0 +1,5 @@
+board:
+  name: nucleo_f411re
+  vendor: st
+  socs:
+    - name: stm32f411xe

boards/st/nucleo_f411re/nucleo_f411re_defconfig

@@ -1,8 +1,5 @@
 # SPDX-License-Identifier: Apache-2.0
 
-CONFIG_SOC_SERIES_STM32F4X=y
-CONFIG_SOC_STM32F411XE=y
-
 # Enable MPU
 CONFIG_ARM_MPU=y