Add libgui.so to the grey-list

Bug: http://b/28151000
Change-Id: I7ba8f78df7dbf32de4839cc5a95ef10e8444715c
diff --git a/linker/linker.cpp b/linker/linker.cpp
index ba5a495..dfa3d21 100644
--- a/linker/linker.cpp
+++ b/linker/linker.cpp
@@ -203,6 +203,7 @@
     "libcrypto.so",
     "libcutils.so",
     "libexpat.so",
+    "libgui.so",
     "libmedia.so",
     "libnativehelper.so",
     "libskia.so",