libstorage needs libbinder include paths

This library is almost all binder related.  It should be
using libbinder's published include path.

Bug: 27804373
Test: This library compiles with a slightly modified libbinder include
      path.

Change-Id: Ib8e00b59604cdda69ec36cf1c90150b4b9033879
diff --git a/libs/storage/Android.mk b/libs/storage/Android.mk
index fae2bf7..d0eb6d4 100644
--- a/libs/storage/Android.mk
+++ b/libs/storage/Android.mk
@@ -11,4 +11,6 @@
 
 LOCAL_CFLAGS += -Wall -Werror
 
+LOCAL_SHARED_LIBRARIES := libbinder
+
 include $(BUILD_STATIC_LIBRARY)