kunit: qemu_configs: Add riscv32 config

Add a basic config to run kunit tests on riscv32.

Link: https://lore.kernel.org/r/20250407-kunit-qemu-riscv32-v1-1-7b9800034a35@linutronix.de
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Reviewed-by: David Gow <davidgow@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>

Author: t-8ch

tools/testing/kunit/qemu_configs/riscv32.py

@@ -0,0 +1,17 @@
+# SPDX-License-Identifier: GPL-2.0
+
+from ..qemu_config import QemuArchParams
+
+QEMU_ARCH = QemuArchParams(linux_arch='riscv',
+			   kconfig='''
+CONFIG_NONPORTABLE=y
+CONFIG_ARCH_RV32I=y
+CONFIG_ARCH_VIRT=y
+CONFIG_SERIAL_8250=y
+CONFIG_SERIAL_8250_CONSOLE=y
+CONFIG_SERIAL_OF_PLATFORM=y
+''',
+			   qemu_arch='riscv32',
+			   kernel_path='arch/riscv/boot/Image',
+			   kernel_command_line='console=ttyS0',
+			   extra_qemu_params=['-machine', 'virt'])