Add adbd_test to presubmit test mapping

Onboard device side gtest of adbd to test mapping to be
run in presubmit.

Test: atest adbd_test
Bug: 112104122
Change-Id: Iefb6be0fb0ecea5a95aadce923c223e40f92bdab
diff --git a/TEST_MAPPING b/TEST_MAPPING
new file mode 100644
index 0000000..c47230f
--- /dev/null
+++ b/TEST_MAPPING
@@ -0,0 +1,7 @@
+{
+  "presubmit": [
+    {
+      "name": "adbd_test"
+    }
+  ]
+}