Greylist libui.so

Bug: http://b/26494034
Bug: http://b/26394120
Change-Id: Ie857b753061ff31aee1fafc4919cc8faed5e3f5d
diff --git a/linker/linker.cpp b/linker/linker.cpp
index 791f94d..dbe4148 100644
--- a/linker/linker.cpp
+++ b/linker/linker.cpp
@@ -173,6 +173,7 @@
     "libnativehelper.so",
     "libssl.so",
     "libstagefright.so",
+    "libui.so",
     "libutils.so",
     nullptr
   };