make: fix dependencies for "make criu" to work

Without the added dependencies, "make criu" will fail when trying to
build arch/x86/crtools.d because it can not find include/config.h, the
extra dependencies force the "config" rule to be processed before the
dependencies of "criu" are evaluated.
Signed-off-by: Filipe Brandenburger <filbranden@google.com>
Acked-by: Cyrill Gorcunov <gorcunov@openvz.org>
Acked-by: Andrew Vagin <avagin@parallels.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Makefile

@@ -184,6 +184,7 @@ pie/$(VDSO_O): pie
 	$(Q) $(MAKE) $(build)=pie pie/$(VDSO_O)
 PROGRAM-BUILTINS	+= pie/$(VDSO_O)
 
+$(SYSCALL-LIB) $(ARCH-LIB) $(PROGRAM-BUILTINS): config
 
 $(PROGRAM): $(SYSCALL-LIB) $(ARCH-LIB) $(PROGRAM-BUILTINS)
 	$(E) "  LINK    " $@