Add a common get_ram_size() function and modify the the
board-specific files to invoke that common implementation.

Move TRAB burn-in tests to TRAB board directory

* Patch by Martin Krause, 11 Sep 2003:
add burn-in tests for TRAB board

* Enable instruction cache on MPC5200 board

* Allow crc32 to be used at address 0x000

* Provide consistent interface to standalone applications to access
the 'global_data' structure
Provide a doc/README.standalone more useful to users/dev

* Allow crc32 to be used at address 0x000

* Provide consistent interface to standalone applications to access
the 'global_data' structure
Provide a doc/README.standalone more useful to users/developers.

* Make IceCube MGT5100 FEC driver work

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* Implement new mechanism to export U-Boot's functions to standalone
applications: instead of using (PPC-specific) system calls we now
use a jump table; please see doc/README.standalone for detai

* Implement new mechanism to export U-Boot's functions to standalone
applications: instead of using (PPC-specific) system calls we now
use a jump table; please see doc/README.standalone for details

* Patch by Dave Westwood, 24 Jul 2003:
added support for Unity OS (a proprietary OS)

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