T series boards use unified RCW for sd, spi and nand boot.
Now split txxx_rcw.cfg to txxx_sd_rcw.cfg, txxx_spi_rcw.cfg
and txxx_nand_rcw.cfg for SPI/NAND/SD boot.
And modify RCW[PBI_SRC] for them:
	PBI_SRC=5            for SPI 24-bit addressing
	PBI_SRC=6            for SD boot
	PBI_SRC=14           for IFC NAND boot
Signed-off-by: NZhao Qiang <qiang.zhao@nxp.com>
Reviewed-by: NYork Sun <york.sun@nxp.com>

T2081 QDS is a high-performance computing evaluation, development and
test platform supporting the T2081 QorIQ Power Architecture processor.

T2081QDS board Overview
-----------------------
- T2081 SoC integrating four 64-bit dual-threads e6500 cores up to 1.8GHz
- 2MB shared L2 and 512KB L3 CoreNet platform cache (CPC)
- CoreNet fabric supporting coherent and noncoherent transactions with
  prioritization and bandwidth allocation
- 32-/64-bit DDR3/DDR3LP SDRAM memory controller with ECC and interleaving
- Ethernet interfaces:
  - Two on-board 10M/100M/1G bps RGMII ports
  - Two 10Gbps XFI with on-board SFP+ cage
  - 1Gbps/2.5Gbps SGMII Riser card
  - 10Gbps XAUI Riser card
- Accelerator:
  - DPAA components consist of FMan, BMan, QMan, PME, DCE and SEC
- SerDes:
  - 8 lanes up to 10.3125GHz
  - Supports SGMII, HiGig, XFI, XAUI and Aurora debug,
- IFC:
  - 512MB NOR Flash, 2GB NAND Flash, PromJet debug port and Qixis FPGA
- eSPI:
  - Three SPI flash (16MB N25Q128A + 16MB EN25S64 + 512KB SST25WF040)
- USB:
  - Two USB2.0 ports with internal PHY (one Type-A + one micro Type mini-AB)
- PCIe:
  - Four PCI Express controllers (two PCIe 2.0 and two PCIe 3.0 with SR-IOV)
- eSDHC:
  - Supports various SD/SDHC/SDXC/eMMC devices with adapter cards and
    voltage translators
- I2C:
  - Four I2C controllers.
- UART:
  - Dual 4-pins UART serial ports
Signed-off-by: NShengzhou Liu <Shengzhou.Liu@freescale.com>
Reviewed-by: NYork Sun <yorksun@freescale.com>

Add the default RCW(SerDes 0x66_0x16) and PBI configure file for
T2080QDS board, so we can use PBL tool to generate the ramboot
image to support boot from NAND/SPI/SD.
Signed-off-by: NShengzhou Liu <Shengzhou.Liu@freescale.com>