Check for unknown flags passed to dlopen(3).

Change-Id: I56f4aab0e5a1487bc32d2c4d231e8bd15c4ac8da
diff --git a/linker/linker.h b/linker/linker.h
index 51869e7..60c76fa 100644
--- a/linker/linker.h
+++ b/linker/linker.h
@@ -207,7 +207,7 @@
 #define DT_PREINIT_ARRAYSZ 33
 #endif
 
-soinfo* do_dlopen(const char* name);
+soinfo* do_dlopen(const char* name, int flags);
 int do_dlclose(soinfo* si);
 
 Elf32_Sym* lookup(const char* name, soinfo** found, soinfo* start);