Add fake libart

Bug: 27775991

Change-Id: I54cbdf2340dcfdd9b3973d9d10c8bd94492736fb
diff --git a/target/product/runtime_libart.mk b/target/product/runtime_libart.mk
index ffc698d..5fd4d7e 100644
--- a/target/product/runtime_libart.mk
+++ b/target/product/runtime_libart.mk
@@ -35,6 +35,7 @@
     ext \
     hprof-conv \
     libart \
+    libart_fake \
     libcrypto \
     libexpat \
     libicui18n \