mpc5200: Add SPL support

This patch adds SPL booting support (NOR flash) for the
MPC5200 platforms.

Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/arch/powerpc/cpu/mpc5xxx/Makefile b/arch/powerpc/cpu/mpc5xxx/Makefile
index 1a088b7..8de2c13 100644
--- a/arch/powerpc/cpu/mpc5xxx/Makefile
+++ b/arch/powerpc/cpu/mpc5xxx/Makefile
@@ -41,6 +41,10 @@
 COBJS-$(CONFIG_CMD_USB) += usb_ohci.o
 COBJS-$(CONFIG_CMD_USB) += usb.o
 
+ifdef CONFIG_SPL_BUILD
+COBJS-y += spl_boot.o
+endif
+
 SRCS	:= $(START:.o=.S) $(SOBJS:.o=.S) $(COBJS-y:.o=.c)
 OBJS	:= $(addprefix $(obj),$(SOBJS) $(COBJS-y))
 START	:= $(addprefix $(obj),$(SSTART) $(CSTART))