Add audiopolicytest to device-tests suite

Add audiopolicytest to device-tests suite to enable use in
TEST_MAPPING for presubmit.

Bug: 186581483
Bug: 206614157
Test: atest AudioPolicyDeathTest
Change-Id: I97de59d626322b84240fa3dc2845046ef73cb152
diff --git a/media/tests/AudioPolicyTest/Android.bp b/media/tests/AudioPolicyTest/Android.bp
index 7963ff2..63292ce 100644
--- a/media/tests/AudioPolicyTest/Android.bp
+++ b/media/tests/AudioPolicyTest/Android.bp
@@ -20,4 +20,5 @@
     platform_apis: true,
     certificate: "platform",
     resource_dirs: ["res"],
+    test_suites: ["device-tests"],
 }