ls1043ardb: nand driver fixups for revision v7.0 boards

The LS1043ARDB rev v7.0 board replace nand device MT29F4G08ABBDAH4-AITX:D
with MT29F4G08ABBFAH4-AIT:F. Reflecting this change in board_fix_fdt().
CPLD V3.0 is needed for nandboot as the nand device changed.
A new macro CPLD_CFG_RCW_SRC_NAND_4K(4Kpage) is added to distinguish from
CPLD_CFG_RCW_SRC_NAND(2Kpage) to support nandboot on rev v7.0 board.

Signed-off-by: Wei Lu <w.lu@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>