boards: Convert nucleo_f334r8 to HWM v2

Port the board to HWMv2.

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

boards/boards_legacy/arm/nucleo_f334r8/Kconfig.board

@@ -1,8 +0,0 @@
-# STM32 Nucleo-64 development board with STM32F334R8 MCU configuration
-
-# Copyright (c) 2016 RnDity Sp. z o.o.
-# SPDX-License-Identifier: Apache-2.0
-
-config BOARD_NUCLEO_F334R8
-	bool "NUCLEO-64 F334R8 Development Board"
-	depends on SOC_STM32F334X8

boards/st/nucleo_f334r8/Kconfig.defconfig

@@ -5,9 +5,6 @@
 
 if BOARD_NUCLEO_F334R8
 
-config BOARD
-	default "nucleo_f334r8"
-
 config SPI_STM32_INTERRUPT
 	default y
 	depends on SPI

boards/st/nucleo_f334r8/Kconfig.nucleo_f334r8

@@ -0,0 +1,5 @@
+# Copyright (c) 2016 RnDity Sp. z o.o.
+# SPDX-License-Identifier: Apache-2.0
+
+config BOARD_NUCLEO_F334R8
+	select SOC_STM32F334X8

boards/st/nucleo_f334r8/board.yml

@@ -0,0 +1,5 @@
+board:
+  name: nucleo_f334r8
+  vendor: st
+  socs:
+    - name: stm32f334x8

boards/st/nucleo_f334r8/nucleo_f334r8_defconfig

@@ -1,15 +1,10 @@
 # SPDX-License-Identifier: Apache-2.0
 
-# Zephyr Kernel Configuration
-CONFIG_SOC_SERIES_STM32F3X=y
-
-# Platform Configuration
-CONFIG_SOC_STM32F334X8=y
-
 # Serial Drivers
 CONFIG_SERIAL=y
 CONFIG_UART_INTERRUPT_DRIVEN=y
-# enable console
+
+# Enable console
 CONFIG_CONSOLE=y
 CONFIG_UART_CONSOLE=y