powerpc/mpc83xx: add support for new SPL

This adds arch support for PPC mpc83xx to boot "minimal" (4K) SPLs
using the new infrastructure.

Existing nand_spl targets are updated to deal with the name change
from nand_init.c to spl_minimal.c (as in theory this isn't limited
to NAND anymore).

Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
diff --git a/arch/powerpc/cpu/mpc83xx/Makefile b/arch/powerpc/cpu/mpc83xx/Makefile
index 687f5e9..8a470b8 100644
--- a/arch/powerpc/cpu/mpc83xx/Makefile
+++ b/arch/powerpc/cpu/mpc83xx/Makefile
@@ -27,8 +27,22 @@
 
 LIB	= $(obj)lib$(CPU).o
 
+MINIMAL=
+
+ifdef CONFIG_SPL_BUILD
+ifdef CONFIG_SPL_INIT_MINIMAL
+MINIMAL=y
+endif
+endif
+
 START	= start.o
 
+ifdef MINIMAL
+
+COBJS-y	+= spl_minimal.o
+
+else
+
 COBJS-y += traps.o
 COBJS-y += cpu.o
 COBJS-y += cpu_init.o
@@ -51,6 +65,8 @@
 endif
 COBJS-$(CONFIG_FSL_DDR2) += law.o
 
+endif # not minimal
+
 COBJS	:= $(COBJS-y)
 SRCS	:= $(START:.o=.S) $(SOBJS:.o=.S) $(COBJS:.o=.c) $(addprefix $(obj),$(COBJS_LN-y:.o=.c))
 OBJS	:= $(addprefix $(obj),$(SOBJS) $(COBJS) $(COBJS_LN-y))