Add build rules for libRSSupportIO (Usage_IO lib for RS compat lib)

bug 12924018

Change-Id: I35af72c1f7788f9fd9cb24bfabdbbad09e865a8b
diff --git a/core/config.mk b/core/config.mk
index 33ce619..14f4b1b 100644
--- a/core/config.mk
+++ b/core/config.mk
@@ -598,5 +598,6 @@
 
 # API Level lists for Renderscript Compat lib.
 RSCOMPAT_32BIT_ONLY_API_LEVELS := 8 9 10 11 12 13 14 15 16 17 18 19 20
+RSCOMPAT_NO_USAGEIO_API_LEVELS := 8 9 10 11 12 13
 
 include $(BUILD_SYSTEM)/dumpvar.mk