powerpc/t4qds: Slave module for boot from SRIO and PCIE

When a T4 board boots from SRIO or PCIE, it needs to finish these processes:
	1. Set all the cores in holdoff status.
	2. Set the boot location to one PCIE or SRIO interface by RCW.
	3. Set a specific TLB entry for the boot process.
	4. Set a LAW entry with the TargetID of one PCIE or SRIO for the boot.
	5. Set a specific TLB entry in order to fetch ucode and ENV from
	   master.
	6. Set a LAW entry with the TargetID one of the PCIE ports for
	   ucode and ENV.
	7. Slave's u-boot image should be generated specifically by
	   make xxxx_SRIO_PCIE_BOOT_config.
	   This will set SYS_TEXT_BASE=0xFFF80000 and other configurations.

For more information about the feature of Boot from SRIO/PCIE, please
refer to the document doc/README.srio-pcie-boot-corenet.

Signed-off-by: Liu Gang <Gang.Liu@freescale.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
diff --git a/boards.cfg b/boards.cfg
index 009e896..4993220 100644
--- a/boards.cfg
+++ b/boards.cfg
@@ -917,6 +917,7 @@
 T4240QDS                     powerpc     mpc85xx     t4qds               freescale      -           T4240QDS:PPC_T4240
 T4240QDS_SDCARD              powerpc     mpc85xx     t4qds               freescale	-           T4240QDS:PPC_T4240,RAMBOOT_PBL,SDCARD,SYS_TEXT_BASE=0xFFF80000
 T4240QDS_SPIFLASH            powerpc     mpc85xx     t4qds               freescale	-           T4240QDS:PPC_T4240,RAMBOOT_PBL,SPIFLASH,SYS_TEXT_BASE=0xFFF80000
+T4240QDS_SRIO_PCIE_BOOT	     powerpc     mpc85xx     t4qds               freescale      -           T4240QDS:PPC_T4240,SRIO_PCIE_BOOT_SLAVE,SYS_TEXT_BASE=0xFFF80000
 T4160QDS                     powerpc     mpc85xx     t4qds               freescale      -           T4240QDS:PPC_T4160
 T4160QDS_SDCARD              powerpc     mpc85xx     t4qds               freescale	-           T4240QDS:PPC_T4160,RAMBOOT_PBL,SDCARD,SYS_TEXT_BASE=0xFFF80000
 T4160QDS_SPIFLASH            powerpc     mpc85xx     t4qds               freescale	-           T4240QDS:PPC_T4160,RAMBOOT_PBL,SPIFLASH,SYS_TEXT_BASE=0xFFF80000