Ensure Mpeg4H263Decoder Unit Tests run on older release

Bug: 189847231
Test: atest Mpeg4H263DecoderTest  on S&Q devices
Change-Id: I9f65a758080700497ca3d33ba00c532c630e4501
diff --git a/media/codecs/m4v_h263/dec/test/Android.bp b/media/codecs/m4v_h263/dec/test/Android.bp
index 6eed66f..d8de569 100644
--- a/media/codecs/m4v_h263/dec/test/Android.bp
+++ b/media/codecs/m4v_h263/dec/test/Android.bp
@@ -47,6 +47,10 @@
         },
     },
 
+    // this unit test also runs within the mainline tests (MTS),
+    // so it must be compatible back to Android Q/10 (sdk 29)
+    min_sdk_version: "29",
+
     srcs: [
         "Mpeg4H263DecoderTest.cpp",
     ],