[Feature] add GA346 baseline version

Change-Id: Ic62933698569507dcf98240cdf5d9931ae34348f
diff --git a/src/kernel/linux/v4.19/drivers/of/unittest-data/testcases.dts b/src/kernel/linux/v4.19/drivers/of/unittest-data/testcases.dts
new file mode 100644
index 0000000..55fe0ee
--- /dev/null
+++ b/src/kernel/linux/v4.19/drivers/of/unittest-data/testcases.dts
@@ -0,0 +1,19 @@
+// SPDX-License-Identifier: GPL-2.0
+/dts-v1/;
+/plugin/;
+
+/ {
+	testcase-data {
+		changeset {
+			prop-update = "hello";
+			prop-remove = "world";
+			node-remove {
+			};
+		};
+	};
+};
+#include "tests-phandle.dtsi"
+#include "tests-interrupts.dtsi"
+#include "tests-match.dtsi"
+#include "tests-platform.dtsi"
+#include "tests-overlay.dtsi"