Use --multi-dex native to avoid dex limit

Bug: 32912773
Test: make checkbuild
Change-Id: I1c95f41cc9e1b151b32c10dd29bf0214abfafedc
diff --git a/tests/Android.mk b/tests/Android.mk
index 1e8b1af..c3ed407 100644
--- a/tests/Android.mk
+++ b/tests/Android.mk
@@ -47,6 +47,8 @@
     --auto-add-overlay \
     --extra-packages com.android.server.telecom
 
+LOCAL_JACK_FLAGS := --multi-dex native
+
 LOCAL_PROGUARD_ENABLED := disabled
 
 LOCAL_PACKAGE_NAME := TelecomUnitTests