Redo partial decomp of intro (force push)

include/link.h

@@ -207,5 +207,7 @@ void sub_80098D8(void);
 void CloseLink(void);
 bool8 sub_800A4BC(void);
 bool32 sub_800B270(void);
+void sub_800B388(void);
+void sub_8054A28(void);
 
 #endif // GUARD_LINK_H