sc530_spunk: add missing SOBJS entry

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/board/sc520_spunk/Makefile b/board/sc520_spunk/Makefile
index bfb77e8..226c756 100644
--- a/board/sc520_spunk/Makefile
+++ b/board/sc520_spunk/Makefile
@@ -36,7 +36,7 @@
 SOBJS	:= $(addprefix $(obj),$(SOBJS))
 
 $(LIB):	$(obj).depend $(OBJS) $(SOBJS)
-	$(AR) $(ARFLAGS) $@ $(OBJS)
+	$(AR) $(ARFLAGS) $@ $(OBJS) $(SOBJS)
 
 clean:
 	rm -f $(SOBJS) $(OBJS)