criu/pie/Makefile: a nitpick

Since commit 656710e the list of prerequisites are the same
as the list of objects, so we can use $^ to avoid repetition.

travis-ci: success for More polishing for compel cli
Signed-off-by: Kir Kolyshkin <kir@openvz.org>
Acked-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>

criu/pie/Makefile

@@ -58,7 +58,7 @@ $(obj)/restorer.built-in.o: $(compel_std)
 $(obj)/parasite.built-in.o: $(compel_std)
 $(obj)/%.built-in.bin.o: $(obj)/%.built-in.o $(obj)/pie.lib.a
 	$(call msg-gen, $@)
-	$(Q) $(LD) $(shell $(COMPEL_BIN) ldflags) -o $@ $< $(obj)/pie.lib.a
+	$(Q) $(LD) $(shell $(COMPEL_BIN) ldflags) -o $@ $^
 
 $(obj)/%-blob.h: $(obj)/%.built-in.bin.o $(SRC_DIR)/compel/compel-host-bin
 	$(call msg-gen, $@)