tests: drivers: build_all: add build for wdt_xilinx_axi

There is currently not an in-tree Zephyr board which enables the
wdt_xilinx_axi driver as part of its standard configuration. (It can be
enabled fairly easily with the Digilent Arty board, but that requires
modifying the ARM-provided FPGA block design in Vivado and rebuilding
the FPGA image, so it cannot be used with the default FPGA image.)

Add a build_all target to provide build coverage for this driver.

Signed-off-by: Robert Hancock <[email protected]>

Author: robhancocksed

tests/drivers/build_all/watchdog/CMakeLists.txt

@@ -0,0 +1,8 @@
+# SPDX-License-Identifier: Apache-2.0
+
+cmake_minimum_required(VERSION 3.20.0)
+find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
+project(build_all)
+
+FILE(GLOB app_sources src/*.c)
+target_sources(app PRIVATE ${app_sources})

tests/drivers/build_all/watchdog/boards/qemu_cortex_m3.overlay

@@ -0,0 +1,15 @@
+/*
+ * Copyright © 2023 Calian Ltd.  All rights reserved.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+ / {
+    watchdog: watchdog@88888888 {
+	compatible = "xlnx,xps-timebase-wdt-1.00.a";
+	reg = <0x88888888 0x10000>;
+	clocks = <&sysclk>;
+	xlnx,wdt-interval = <31>;
+	xlnx,wdt-enable-once = <1>;
+    };
+};

tests/drivers/build_all/watchdog/prj.conf

@@ -0,0 +1,3 @@
+CONFIG_TEST=y
+CONFIG_TEST_USERSPACE=y
+CONFIG_WATCHDOG=y

tests/drivers/build_all/watchdog/src/main.c

@@ -0,0 +1,9 @@
+/*
+ * Copyright © 2023 Calian Ltd.  All rights reserved.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+void main(void)
+{
+}

tests/drivers/build_all/watchdog/testcase.yaml

@@ -0,0 +1,9 @@
+common:
+  build_only: true
+  tags: drivers watchdog
+tests:
+  drivers.watchdog.build:
+    # will cover drivers without in-tree boards
+    platform_allow: qemu_cortex_m3
+    tags: wdt_xilinx_axi
+    extra_args: "CONFIG_WATCHDOG=y"