powerpc/T4QDS: add two stage boot of nand/sd

Add support of 2 stage NAND/SD boot loader using SPL framework.
PBL initialise the internal SRAM and copy SPL, this further
initialise DDR using SPD and environment and copy u-boot from
NAND/SD to DDR, finally SPL transfer control to u-boot.
NOR uses CS1 instead of CS2 when NAND boot, fix it.

Signed-off-by: Shaohui Xie <Shaohui.Xie@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
diff --git a/boards.cfg b/boards.cfg
index 7f91210..ad34aa7 100644
--- a/boards.cfg
+++ b/boards.cfg
@@ -971,13 +971,14 @@
 Active  powerpc     mpc85xx        -           freescale       t208xrdb            T2080RDB_SRIO_PCIE_BOOT              T208xRDB:PPC_T2080,SRIO_PCIE_BOOT_SLAVE,SYS_TEXT_BASE=0xFFF40000                                                                  -
 Active  powerpc     mpc85xx        -           freescale       t4qds               T4160QDS                             T4240QDS:PPC_T4160                                                                                                                -
 Active  powerpc     mpc85xx        -           freescale       t4qds               T4160QDS_SECURE_BOOT                 T4240QDS:PPC_T4160,SECURE_BOOT                                                                                                    Aneesh Bansal <aneesh.bansal@freescale.com>
-Active  powerpc     mpc85xx        -           freescale       t4qds               T4160QDS_SDCARD                      T4240QDS:PPC_T4160,RAMBOOT_PBL,SDCARD,SYS_TEXT_BASE=0xFFF40000                                                                    -
+Active  powerpc     mpc85xx        -           freescale       t4qds               T4160QDS_NAND                        T4240QDS:PPC_T4160,RAMBOOT_PBL,SPL_FSL_PBL,NAND                                                                    -
+Active  powerpc     mpc85xx        -           freescale       t4qds               T4160QDS_SDCARD                      T4240QDS:PPC_T4160,RAMBOOT_PBL,SPL_FSL_PBL,SDCARD                                                                    -
 Active  powerpc     mpc85xx        -           freescale       t4qds               T4160QDS_SPIFLASH                    T4240QDS:PPC_T4160,RAMBOOT_PBL,SPIFLASH,SYS_TEXT_BASE=0xFFF40000                                                                  -
 Active  powerpc     mpc85xx        -           freescale       t4qds               T4240EMU                             T4240EMU:PPC_T4240                                                                                                                York Sun <yorksun@freescale.com>
 Active  powerpc     mpc85xx        -           freescale       t4qds               T4240QDS                             T4240QDS:PPC_T4240                                                                                                                -
 Active  powerpc     mpc85xx        -           freescale       t4qds               T4240QDS_SECURE_BOOT                 T4240QDS:PPC_T4240,SECURE_BOOT                                                                                                    Aneesh Bansal <aneesh.bansal@freescale.com>
-Active  powerpc     mpc85xx        -           freescale       t4qds               T4240QDS_NAND                        T4240QDS:PPC_T4240,RAMBOOT_PBL,NAND,SYS_TEXT_BASE=0xFFF40000                                                                      -
-Active  powerpc     mpc85xx        -           freescale       t4qds               T4240QDS_SDCARD                      T4240QDS:PPC_T4240,RAMBOOT_PBL,SDCARD,SYS_TEXT_BASE=0xFFF40000                                                                    -
+Active  powerpc     mpc85xx        -           freescale       t4qds               T4240QDS_NAND	                T4240QDS:PPC_T4240,RAMBOOT_PBL,SPL_FSL_PBL,NAND                                                                      -
+Active  powerpc     mpc85xx        -           freescale       t4qds               T4240QDS_SDCARD                      T4240QDS:PPC_T4240,RAMBOOT_PBL,SPL_FSL_PBL,SDCARD                                                                    -
 Active  powerpc     mpc85xx        -           freescale       t4qds               T4240QDS_SPIFLASH                    T4240QDS:PPC_T4240,RAMBOOT_PBL,SPIFLASH,SYS_TEXT_BASE=0xFFF40000                                                                  -
 Active  powerpc     mpc85xx        -           freescale       t4qds               T4240QDS_SRIO_PCIE_BOOT              T4240QDS:PPC_T4240,SRIO_PCIE_BOOT_SLAVE,SYS_TEXT_BASE=0xFFF40000                                                                  -
 Active  powerpc     mpc85xx        -           freescale       qemu-ppce500        qemu-ppce500                         -                                                                                                                                 Alexander Graf <agraf@suse.de>