Provide target for Google Truth

Change-Id: I102fdcf2a91ddda66174fece5fb94625c9f65a09
Fixes: 31252617
diff --git a/common/m2/Android.mk b/common/m2/Android.mk
index 8bb5932..a6ed33a 100644
--- a/common/m2/Android.mk
+++ b/common/m2/Android.mk
@@ -19,12 +19,15 @@
 ###########################################
 
 # com.squareup.haha prebuilt.
+# com.google.truth prebuilt.
 
 include $(CLEAR_VARS)
 
 LOCAL_PREBUILT_STATIC_JAVA_LIBRARIES := \
-    squareup-haha-prebuilt:repository/com/squareup/haha/haha/2.0.2/haha-2.0.2.jar
+    squareup-haha-prebuilt:repository/com/squareup/haha/haha/2.0.2/haha-2.0.2.jar \
+    truth-prebuilt:/repository/com/google/truth/truth/0.28/truth-0.28.jar
 
 include $(BUILD_MULTI_PREBUILT)
 
 ###########################################
+