boards: Convert b_l4s5i_iot01a to HWM v2

Port the board to HWMv2.

Signed-off-by: Guillaume Gautier <guillaume.gautier-ext@st.com>

boards/boards_legacy/arm/b_l4s5i_iot01a/Kconfig.board

@@ -1,8 +0,0 @@
-# B_L4S5I_IOT01A discovery kit configuration
-
-# Copyright (c) 2020 STMicroelectronics
-# SPDX-License-Identifier: Apache-2.0
-
-config BOARD_B_L4S5I_IOT01A
-	bool "STM32L4S5I IOT Discovery kit"
-	depends on SOC_STM32L4S5XX

boards/st/b_l4s5i_iot01a/Kconfig.b_l4s5i_iot01a

@@ -0,0 +1,5 @@
+# Copyright (c) 2020 STMicroelectronics
+# SPDX-License-Identifier: Apache-2.0
+
+config BOARD_B_L4S5I_IOT01A
+	select SOC_STM32L4S5XX

boards/st/b_l4s5i_iot01a/Kconfig.defconfig

@@ -5,9 +5,6 @@
 
 if BOARD_B_L4S5I_IOT01A
 
-config BOARD
-	default "b_l4s5i_iot01a"
-
 config SPI_STM32_INTERRUPT
 	default y
 	depends on SPI

boards/st/b_l4s5i_iot01a/b_l4s5i_iot01a_defconfig

@@ -1,8 +1,5 @@
 # SPDX-License-Identifier: Apache-2.0
 
-CONFIG_SOC_SERIES_STM32L4X=y
-CONFIG_SOC_STM32L4S5XX=y
-
 # enable uart driver
 CONFIG_SERIAL=y
 

boards/st/b_l4s5i_iot01a/board.yml

@@ -0,0 +1,5 @@
+board:
+  name: b_l4s5i_iot01a
+  vendor: st
+  socs:
+    - name: stm32l4s5xx

boards/st/b_l4s5i_iot01a/doc/index.rst

@@ -135,7 +135,7 @@ The Zephyr b_l4s5i_iot01a board configuration supports the following hardware fe
 
 The default configuration can be found in the defconfig file:
 
-	``boards/arm/b_l4s5i_iot01a/b_l4s5i_iot01a_defconfig``
+	``boards/st/b_l4s5i_iot01a/b_l4s5i_iot01a_defconfig``
 
 
 Connections and IOs