[fdt][test] Add integration test for libfdt

Bug: 282928116
Test: atest liblibfdt.integration_test
Change-Id: Ic9a59bf4ee4d925e028e7d2043d648fad93aa85d
diff --git a/libs/libfdt/TEST_MAPPING b/libs/libfdt/TEST_MAPPING
new file mode 100644
index 0000000..596f84b
--- /dev/null
+++ b/libs/libfdt/TEST_MAPPING
@@ -0,0 +1,7 @@
+{
+  "avf-presubmit": [
+    {
+      "name": "liblibfdt.integration_test"
+    }
+  ]
+}