build: add missing $(AR)->$(cmd_link_o_target) update

Seems people fixed their files to use libfoo.o, but didn't actually
update the creation targets to use $(cmd_link_o_target).  Update the
rest of the Makefile's found with grep.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Tested-by: Simon Glass <sjg@chromium.org>
diff --git a/board/samsung/smdkv310/Makefile b/board/samsung/smdkv310/Makefile
index 8e9b703..d168abd 100644
--- a/board/samsung/smdkv310/Makefile
+++ b/board/samsung/smdkv310/Makefile
@@ -34,7 +34,7 @@
 all:	 $(obj).depend $(LIB)
 
 $(LIB):	$(OBJS)
-	$(AR) $(ARFLAGS) $@ $(OBJS)
+	$(call cmd_link_o_target, $(OBJS))
 
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