ppc4xx: Change Kilauea to use the common DDR2 init function

This patch changes the kilauea and kilauea_nand (for NAND booting)
board port to not use a board specific DDR2 init routine anymore. Now
the common code from cpu/ppc4xx is used.

Thanks to Grant Erickson for all his basic work on this 405EX early
bootup.

Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/board/amcc/kilauea/Makefile b/board/amcc/kilauea/Makefile
index 39328c2..981ef3a 100644
--- a/board/amcc/kilauea/Makefile
+++ b/board/amcc/kilauea/Makefile
@@ -25,8 +25,7 @@
 
 LIB	= $(obj)lib$(BOARD).a
 
-COBJS	= $(BOARD).o cmd_pll.o memory.o
-SOBJS	= init.o
+COBJS	= $(BOARD).o cmd_pll.o
 
 SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
 OBJS	:= $(addprefix $(obj),$(SOBJS) $(COBJS))