tests/qtest: sifive-e-aon-watchdog-test.c: Add QTest of watchdog of sifive_e

Add some simple tests of the watchdog timer in the always-on domain device
of HiFive 1 rev b.

Signed-off-by: Tommy Wu <tommy.wu@sifive.com>
Reviewed-by: Frank Chang <frank.chang@sifive.com>
Acked-by: Thomas Huth <thuth@redhat.com>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20230627141216.3962299-4-tommy.wu@sifive.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
diff --git a/tests/qtest/meson.build b/tests/qtest/meson.build
index 74630f6..b071d40 100644
--- a/tests/qtest/meson.build
+++ b/tests/qtest/meson.build
@@ -234,6 +234,9 @@
    'cpu-plug-test',
    'migration-test']
 
+qtests_riscv32 = \
+  (config_all_devices.has_key('CONFIG_SIFIVE_E_AON') ? ['sifive-e-aon-watchdog-test'] : [])
+
 qos_test_ss = ss.source_set()
 qos_test_ss.add(
   'ac97-test.c',