regressions/ck_fifo: Add dependency to ck_fifo.h.

regressions/ck_fifo/validate/Makefile

@@ -10,16 +10,16 @@ check: all
 	./ck_fifo_spsc_iterator
 	./ck_fifo_mpmc_iterator
 
-ck_fifo_spsc: ck_fifo_spsc.c
+ck_fifo_spsc: ck_fifo_spsc.c ../../../include/ck_fifo.h
 	$(CC) $(CFLAGS) -o ck_fifo_spsc ck_fifo_spsc.c
 
-ck_fifo_mpmc: ck_fifo_mpmc.c
+ck_fifo_mpmc: ck_fifo_mpmc.c ../../../include/ck_fifo.h
 	$(CC) $(CFLAGS) -o ck_fifo_mpmc ck_fifo_mpmc.c
 
-ck_fifo_spsc_iterator: ck_fifo_spsc_iterator.c
+ck_fifo_spsc_iterator: ck_fifo_spsc_iterator.c ../../../include/ck_fifo.h
 	$(CC) $(CFLAGS) -o ck_fifo_spsc_iterator ck_fifo_spsc_iterator.c
 
-ck_fifo_mpmc_iterator: ck_fifo_mpmc_iterator.c
+ck_fifo_mpmc_iterator: ck_fifo_mpmc_iterator.c ../../../include/ck_fifo.h
 	$(CC) $(CFLAGS) -o ck_fifo_mpmc_iterator ck_fifo_mpmc_iterator.c
 
 clean: