Add rsaContextSetNativeLibDir to libRS.map

Bug: 27877905

  - Fix CTS test failures on 64bit devices.

Change-Id: Ie55aa3bfbba1ef535accdc03d50a845dd237ae0a
(cherry picked from commit 4dfd759dc0c3ba8ed5f00d0b9fb1ea3f377ed97d)
diff --git a/libRS.map b/libRS.map
index 4440ad9..c288bf1 100644
--- a/libRS.map
+++ b/libRS.map
@@ -1,6 +1,7 @@
 libRS {
   global:
     rsaAllocationGetType;
+    rsaContextSetNativeLibDir;
     rsaElementGetNativeData;
     rsaElementGetSubElements;
     rsaGetName;