82xx, mgcoge: updates for 2009.03

- activate CS4 for accessing the FPGA
- activate Rx buf len > 1 on SMC
- pram activated
- MTDPARTS_DEFAULT defined
- update the size of the flashes in the DTS
  before booting Linux
- MONITOR_LEN updated to 384k
- added CONFIG_HOSTNAME
- added CONFIG_ENV_BUFFER_PRINT
- Environment size reduced to 16k

Signed-off-by: Heiko Schocher <hs@denx.de>