boards: convert QEMU RV32E board to Zephyr HWMv2

This commit converts the QEMU RV32E board to Zephyr HWMvW. This includes
the following former target: qemu_riscv32e.

Signed-off-by: Filip Kokosinski <fkokosinski@antmicro.com>

boards/boards_legacy/riscv/qemu_riscv32e/Kconfig.board

@@ -1,11 +0,0 @@
-# Copyright (c) 2022 Carlo Caione <ccaione@baylibre.com>
-# SPDX-License-Identifier: Apache-2.0
-
-config BOARD_QEMU_RISCV32E
-	bool "QEMU RISCV32E target"
-	depends on SOC_RISCV_VIRT
-	select QEMU_TARGET
-	select HAS_COVERAGE_SUPPORT
-	select RISCV_ISA_RV32E
-	select RISCV_ISA_EXT_ZICSR
-	select RISCV_ISA_EXT_ZIFENCEI

boards/boards_legacy/riscv/qemu_riscv32e/Kconfig.defconfig

@@ -1,13 +0,0 @@
-# Copyright (c) 2022 Carlo Caione <ccaione@baylibre.com>
-# SPDX-License-Identifier: Apache-2.0
-
-config BUILD_OUTPUT_BIN
-	default n
-
-config BOARD
-	default "qemu_riscv32e" if BOARD_QEMU_RISCV32E
-
-# Use thread local storage by default so that
-# this feature gets more CI coverage.
-config THREAD_LOCAL_STORAGE
-	default y

boards/qemu/qemu_riscv32e/Kconfig

@@ -0,0 +1,5 @@
+# Copyright (c) 2024 Antmicro <www.antmicro.com>
+# SPDX-License-Identifier: Apache-2.0
+
+config BOARD_QEMU_RISCV32E
+	select QEMU_TARGET

boards/qemu/qemu_riscv32e/Kconfig.defconfig

@@ -0,0 +1,16 @@
+# Copyright (c) 2024 Antmicro <www.antmicro.com>
+# SPDX-License-Identifier: Apache-2.0
+
+if BOARD_QEMU_RISCV32E
+
+# Use thread local storage by default so that this feature gets more CI coverage.
+config THREAD_LOCAL_STORAGE
+	default y
+
+config BUILD_OUTPUT_BIN
+	default n
+
+config HAS_COVERAGE_SUPPORT
+	default y
+
+endif # BOARD_QEMU_RISCV32E

boards/qemu/qemu_riscv32e/Kconfig.qemu_riscv32e

@@ -0,0 +1,5 @@
+# Copyright (c) 2024 Antmicro <www.antmicro.com>
+# SPDX-License-Identifier: Apache-2.0
+
+config BOARD_QEMU_RISCV32E
+	select SOC_QEMU_VIRT_RISCV32E

boards/qemu/qemu_riscv32e/board.yml

@@ -0,0 +1,5 @@
+board:
+  name: qemu_riscv32e
+  vendor: qemu
+  socs:
+    - name: qemu_virt_riscv32e

boards/qemu/qemu_riscv32e/qemu_riscv32e_defconfig

@@ -1,7 +1,5 @@
 # SPDX-License-Identifier: Apache-2.0
 
-CONFIG_SOC_RISCV_VIRT=y
-CONFIG_BOARD_QEMU_RISCV32E=y
 CONFIG_CONSOLE=y
 CONFIG_SERIAL=y
 CONFIG_UART_CONSOLE=y