Add support for automatic creation of BUILD_DIR directory.

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.

Patch by JinHua Luo, 01 Sep 2005

Patch by Sangmoon Kim, 18 Aug 2005

  - make highboot configurations use environment at high end, too,
    to avoid flash fragmentation
  - always use redundand environment
  - don't enable video code for modules without graphics controller
  - provide useful (though different) mtdparts settings
  - get rid of CONFIG_CS_AUTOCONF which was always set anyway

* Extend mkconfig tool to print more useful target name

- Support for TQM5200S (short version without graphic controller)
- Support for modules with 'N' type S29GL128N Spansion flashes
  (requires changes to flash layout)
- Support for MPC5200B cpu (mostly support for second SDRAM bank)

Patch by Martin Krause, 20 Mar 2006

Signed-off-by: Martin Krause <martin.krause@tqs.de>

Patch by Markus Klotzbuecher, 12 Jul 2006

  Patch from Richard Danter, 12 Aug 2005

Patch by Thomas Lange, Aug 11 2005

Make the automatic CS configuration the default.
The dedicated configurations CONFIG_TQM5200_AA, CONFIG_TQM5200_AB
and CONFIG_TQM5200_AC are removed.
"TQM5200_config" is now the default for STK52XX.200 base boards.
On a STK52XX.100 base board "TQM5200_STK100_config" must be used.
Patch by Martin Krause, 07 Nov 2005

  Patch by Scott McNutt, 08 Jun 2006

Patch by Stefan Roese, 02 Jun 2006

- Add IXP4xx NPE ethernet MAC support
- Add support for Intel IXDPG425 board
- Add support for Prodrive PDNB3 board
- Add IRQ support
Patch by Stefan Roese, 23 May 2006

[This patch does not include cpu/ixp/npe/IxNpeMicrocode.c which still
 sufferes from licensing issues. Blame Intel.]

Patch from David Snowdon, 13. Aug 2005

Patch from Scott McNutt, 11 Aug 2005

Signed-off-by: dzu@denx.de <dzu@denx.de>

  - Removed MPC8349ADS port
  - Added PCI support to MPC8349ADS
  - reworked memory map to allow mapping of all regions with BATs
  Patch by Kumar Gala 20 Apr 2006

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

relocate ichache_State to ram
u-boot can run from internal flash
Add EB+MCF-EV123 board support.
Add m68k Boards to MAKEALL
Patch from Jens Scharsig, 08 Aug 2005

Patch by  Patch by Jose Maria (Txema) Lopez, 16 Jan 2006

Patch by Yuli Barcohen, 13 Jul 2005

code and in SoC code). Boards using the old way have CFG_NAND_LEGACY and
BOARDLIBS = drivers/nand_legacy/libnand_legacy.a added. Build breakage for
NETTA.ERR and NETTA_ISDN - will go away when the new NAND support is
implemented for these boards.

zylonite). Minor pxa-regs.h update.

done so far:

	* created zylonite board dir (based on lubbock)
	* extended some - but not all pxa sources and headers for Intel
	  Monahans support (CONFIG_CPU_MONAHANS)
	* created Makefile zylonite target + MAKEALL entry
	* added some debug nonsense, remove later, grep for mk@tbd

Status: compiles (eldk-4.0), and can be started with BDI, but runs forever
	and doesn't halt at breakpoints. Hmmm...

- Support for TQM8541/8555 boards added.
- Complete rework of TQM8540/8560 support.
- Common TQM85xx code now supports all current TQM85xx platforms
  (TQM8540/8541/8555/8560).
- DDR SDRAM size detection added.
- CAS latency default values can be overwritten by setting "serial#"
  to e.g. "ABC0001 casl=25" -> CAS latency 2.5 will be used.
  If problems are detected with this non default CAS latency,
  the defualt values will be used instead.
- FLASH size detection added.
- Moved FCC ethernet driver initialization behind TSEC driver init
  -> TSEC is first device.

Patch by Stefan Roese, 30 Nov 2005

Patch by John Otken, 23 Nov 2005

- Added onboard PPC440 DDR autodetection in cpu/ppc/sdram.c
- CFG_FLASH_QUIET_TEST added to use the common CFI driver
  for bank autodetection
Patch by Stefan Roese, 22 Nov 2005

Added CONFIG_NET_MULTI for VOM405 board.
Added reset_phy() for VOM405 board.
Patch by Matthias Fuchs, 09 Nov 2005

Patch by Stefan Roese, 20 Oct 2005