Add TEST_MAPPING to run the codeclist unit tests

also make sure sure that CodedListTest is in proper test_suites group.

Bug: 156965191
Test: atest CodecListTest
Test: atest in the frameworks/av/media/libmedia directory
Change-Id: I1383000864fec69fc2b7ec3067ef40c171f6f881
diff --git a/media/libmedia/TEST_MAPPING b/media/libmedia/TEST_MAPPING
new file mode 100644
index 0000000..65390ed
--- /dev/null
+++ b/media/libmedia/TEST_MAPPING
@@ -0,0 +1,6 @@
+// test_mapping for frameworks/av/media/libmedia
+{
+  "presubmit": [
+    { "name": "CodecListTest" }
+  ]
+}