Enables RTTI (required by many tests)

Change-Id: I1fbc94941978c52230930ed15921900bcba1660f
diff --git a/Android.mk b/Android.mk
index 06fdb74..0a93c92 100644
--- a/Android.mk
+++ b/Android.mk
@@ -60,6 +60,7 @@
 LOCAL_CLANG := true
 LOCAL_SRC_FILES := $(LIBCXX_SRC_FILES)
 LOCAL_CPPFLAGS := $(LIBCXX_CPPFLAGS)
+LOCAL_RTTI_FLAG := -frtti
 LOCAL_SYSTEM_SHARED_LIBRARIES := libc
 LOCAL_SHARED_LIBRARIES := libc++abi
 
@@ -83,6 +84,7 @@
 LOCAL_CLANG := true
 LOCAL_SRC_FILES := $(LIBCXX_SRC_FILES)
 LOCAL_CPPFLAGS := $(LIBCXX_CPPFLAGS)
+LOCAL_RTTI_FLAG := -frtti
 LOCAL_LDFLAGS := -nodefaultlibs
 LOCAL_LDLIBS := -lc