xilinx-ppc4xx-generic: Use common u-boot.lds

Use common ppc4xx linker script for xilinx ppc440 and ppc405 related boards.

Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/board/xilinx/ppc440-generic/Makefile b/board/xilinx/ppc440-generic/Makefile
index d84cf69..1760e4e 100644
--- a/board/xilinx/ppc440-generic/Makefile
+++ b/board/xilinx/ppc440-generic/Makefile
@@ -43,7 +43,9 @@
 OBJS	:= $(addprefix $(obj),$(COBJS))
 SOBJS	:= $(addprefix $(obj),$(SOBJS))
 
-$(LIB):	$(OBJS) $(SOBJS)
+all: $(LIB) $(SOBJS)
+
+$(LIB):	$(OBJS)
 	$(call cmd_link_o_target, $^)
 
 clean: