Signed-off-by: Peter Tyser <ptyser@xes-inc.com>

This change is needed for mgcoge because it uses two ethernet drivers.

Add a check for the presence of the PIGGY board on mgcoge.  Without this
board networking cannot work and the initialization must be aborted.

Only allocate rtx once to prevent DPRAM exhaustion.

Initialize ether_scc.c and the keymile-specific HDLC driver (to be added
soon) in eth.c.

Signed-off-by: Gary Jennejohn <garyj@denx.de>
Signed-off-by: Ben Warren <biggerbadderben@gmail.com>

Based on patch by Mike Frysinger, 20 Jun 2006

Modifications are based on the linux kernel approach and
support two use cases:

  1) Add O= to the make command line
  'make O=/tmp/build all'

  2) Set environement variable BUILD_DIR to point to the desired location
  'export BUILD_DIR=/tmp/build'
  'make'

The second approach can also be used with a MAKEALL script
'export BUILD_DIR=/tmp/build'
'./MAKEALL'

Command line 'O=' setting overrides BUILD_DIR environent variable.

When none of the above methods is used the local build is performed and
the object files are placed in the source directory.

  - rewrite of the S3C24X0 register definitions stuff
  - "driver" for the built-in S3C24X0 RTC

* Patches by Yuli Barcohen, 12 Jun 2003:
  - Add MII support and Ethernet PHY initialization for MPC8260ADS board
  - Fix incorrect SIUMCR initialisation caused by wrong Hard Reset
    configuration word supplied by FPGA on some MPC8260ADS boards

* Patch by Pantelis Antoniou, 10 Jun 2003:
  Unify status LED interface

* Patch by Keith Outwater, 28 Apr 2003:
  - Miscellaneous corrections and additions to GEN860T board specific code.
  - Added GEN860_SC variant to GEN860T.
  - Miscellaneous corrections to GEN860T documentation.
  - Correct duplicate entry in U-Boot CREDITS file.
  - Add GEN860T_SC entry in MAINTAINERS file.
  - Update CREDITS file with GEN860T_SC info.

* Update Smiths Aerospace addresses in MAINTAINERS file

* Fix error handling in hush's version of "run" command