Generate constants from <sys/mman.h>.
am: 1fc331774b

Change-Id: Iff978c85d79409b1b898163396d79b7262df4071
diff --git a/gen_constants-inl.h b/gen_constants-inl.h
index e439b3e..ea8c701 100644
--- a/gen_constants-inl.h
+++ b/gen_constants-inl.h
@@ -9,6 +9,7 @@
 #include <linux/termios.h>
 #include <stddef.h>
 #include <signal.h>
+#include <sys/mman.h>
 #include <sys/stat.h>
 #include <sys/resource.h>
 #include <sys/types.h>