add support for the ids8313 board.
CPU: e300c3, MPC8313, Rev: 2.1 at 396 MHz, CSB: 132 MHz
I2C: ready
SPI: ready
DRAM: 128 MiB (DDR2, 32-bit, ECC off, 264 MHz)
Flash: 8 MiB
NAND: 128 MiB
Net: TSEC0, TSEC1 [PRIME]
public key on NOR flash start
Signed-off-by: Heiko Schocher
Signed-off-by: Kim Phillips