powerpc: p1022ds: add TPL for p1022ds nand boot

TPL is introduced in the patch "NAND: TPL : introduce the TPL
based on the SPL", here enable TPL for p1022ds nand boot.

Signed-off-by: Ying Zhang <b40530@freescale.com>
Acked-by: York Sun <yorksun@freescale.com>
diff --git a/drivers/mtd/nand/Makefile b/drivers/mtd/nand/Makefile
index e27e0b7..366dee6 100644
--- a/drivers/mtd/nand/Makefile
+++ b/drivers/mtd/nand/Makefile
@@ -23,6 +23,7 @@
 COBJS-$(CONFIG_SPL_NAND_LOAD) += nand_spl_load.o
 COBJS-$(CONFIG_SPL_NAND_ECC) += nand_ecc.o
 COBJS-$(CONFIG_SPL_NAND_BASE) += nand_base.o
+COBJS-$(CONFIG_SPL_NAND_INIT) += nand.o
 
 else # not spl