make: Fixup dependency on config.h after pulling patches from -dev

In -dev branch the deps scheme is different as we have soccr and
compel bits there, so in master the criu vs piegen vs config
deps should look differently.
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

Makefile

@@ -211,7 +211,7 @@ $(eval $(call gen-built-in,images))
 # the nmk so we can reuse it there.
 criu/%: images/built-in.o $(VERSION_HEADER) .FORCE
 	$(Q) $(MAKE) $(build)=criu $@
-criu: images/built-in.o $(VERSION_HEADER)
+criu: images/built-in.o $(VERSION_HEADER) $(CONFIG_HEADER)
 	$(Q) $(MAKE) $(build)=criu all
 .PHONY: criu
 

criu/Makefile

@@ -50,7 +50,7 @@ $(ARCH-LIB): syscalls_lib
 ifeq ($(piegen-y),y)
 piegen-bin		:= criu/pie/piegen/piegen
 
-criu/pie/piegen/%: config
+criu/pie/piegen/%: $(CONFIG_HEADER)
 	$(Q) CC=$(HOSTCC) LD=$(HOSTLD) CFLAGS="$(ccflags-y) $(HOSTCFLAGS) $(WARNINGS) $(DEFINES)" $(MAKE) $(build)=criu/pie/piegen $@
 $(piegen-bin): criu/pie/piegen/built-in.o
 	$(call msg-link, $@)