Build RS compatibility library apps with libcompiler_rt.so too.

Change-Id: Ibc14ceb473bef23ab9e28f3a6bf7e4e99d529c01
diff --git a/core/definitions.mk b/core/definitions.mk
index cb20d8f..be26024 100644
--- a/core/definitions.mk
+++ b/core/definitions.mk
@@ -828,7 +828,7 @@
 	$(PRIVATE_COMPILER_RT) \
 	-o $@ -L prebuilts/gcc/ \
 	-L $(TARGET_OUT_INTERMEDIATE_LIBRARIES) $(PRIVATE_LIBPATH) \
-	-lRSSupport -lm
+	-lRSSupport -lm -lcompiler_rt
 endef
 
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