powerpc/mpc83xx: convert MPC8313ERDB to new-SPL

This converts MPC8313ERDB NAND boot to use the new SPL infrastructure.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
diff --git a/boards.cfg b/boards.cfg
index 35f38f3..47baaa0 100644
--- a/boards.cfg
+++ b/boards.cfg
@@ -657,8 +657,8 @@
 MPC8308RDB                   powerpc     mpc83xx     mpc8308rdb          freescale
 MPC8313ERDB_33               powerpc     mpc83xx     mpc8313erdb         freescale      -           MPC8313ERDB:SYS_33MHZ
 MPC8313ERDB_66               powerpc     mpc83xx     mpc8313erdb         freescale      -           MPC8313ERDB:SYS_66MHZ
-MPC8313ERDB_NAND_33          powerpc     mpc83xx     mpc8313erdb         freescale      -           MPC8313ERDB:SYS_33MHZ,NAND_U_BOOT
-MPC8313ERDB_NAND_66          powerpc     mpc83xx     mpc8313erdb         freescale      -           MPC8313ERDB:SYS_66MHZ,NAND_U_BOOT
+MPC8313ERDB_NAND_33          powerpc     mpc83xx     mpc8313erdb         freescale      -           MPC8313ERDB:SYS_33MHZ,NAND
+MPC8313ERDB_NAND_66          powerpc     mpc83xx     mpc8313erdb         freescale      -           MPC8313ERDB:SYS_66MHZ,NAND
 MPC8315ERDB                  powerpc     mpc83xx     mpc8315erdb         freescale      -           MPC8315ERDB
 MPC8315ERDB_NAND             powerpc     mpc83xx     mpc8315erdb         freescale      -           MPC8315ERDB:NAND_U_BOOT
 MPC8323ERDB                  powerpc     mpc83xx     mpc8323erdb         freescale