Move "ar" flags to config.mk to allow for silent "make -s"
Based on patch by Mike Frysinger, 20 Jun 2006
diff --git a/cpu/ixp/Makefile b/cpu/ixp/Makefile
index 2867270..e1fb327 100644
--- a/cpu/ixp/Makefile
+++ b/cpu/ixp/Makefile
@@ -35,7 +35,7 @@
 all:	$(obj).depend $(START) $(LIB)
 
 $(LIB):	$(OBJS)
-	$(AR) crv $@ $(OBJS)
+	$(AR) $(ARFLAGS) $@ $(OBJS)
 
 #########################################################################