powerpc/mpc85xx/p1_p2_rdb_pc: new SPL support

Introduces CONFIG_SPL_RELOC_TEXT_BASE and CONFIG_SPL_RELOC_STACK.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Cc: Andy Fleming <afleming@freescale.com>
diff --git a/board/freescale/p1_p2_rdb_pc/Makefile b/board/freescale/p1_p2_rdb_pc/Makefile
index 0dcf7d1..5b45d72 100644
--- a/board/freescale/p1_p2_rdb_pc/Makefile
+++ b/board/freescale/p1_p2_rdb_pc/Makefile
@@ -24,11 +24,27 @@
 
 LIB    = $(obj)lib$(BOARD).o
 
+MINIMAL=
+
+ifdef CONFIG_SPL_BUILD
+ifdef CONFIG_SPL_INIT_MINIMAL
+MINIMAL=y
+endif
+endif
+
+ifdef MINIMAL
+
+COBJS-y	+= spl_minimal.o tlb.o law.o
+
+else
+
 COBJS-y        += $(BOARD).o
 COBJS-y        += ddr.o
 COBJS-y        += law.o
 COBJS-y        += tlb.o
 
+endif
+
 SRCS   := $(SOBJS:.o=.S) $(COBJS-y:.o=.c)
 OBJS   := $(addprefix $(obj),$(COBJS-y))
 SOBJS  := $(addprefix $(obj),$(SOBJS))