instead CFG_MONITOR_LEN is now only used to determine _at_compile_
_time_ (!) if the environment is embedded within the U-Boot image,
or in a separate flash sector.
* Cleanup CFG_DER #defines in config files (wd maintained only)
- fix SRAM and SDRAM memory sizing
- add status LED support
- add MAC address for second (SCC1) ethernet port
Update default environment for TQM8260 board