Move "ar" flags to config.mk to allow for silent "make -s"
Based on patch by Mike Frysinger, 20 Jun 2006
diff --git a/board/bmw/Makefile b/board/bmw/Makefile
index b775da2..ac85cc3 100644
--- a/board/bmw/Makefile
+++ b/board/bmw/Makefile
@@ -38,7 +38,7 @@
 SOBJS	:= $(addprefix $(obj),$(SOBJS))
 
 $(LIB):	$(obj).depend $(OBJS) $(SOBJS)
-	$(AR) crv $@ $(OBJS) $(SOBJS)
+	$(AR) $(ARFLAGS) $@ $(OBJS) $(SOBJS)
 
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