Support for new board, gth2

* Patch by Thomas Lange Aug 11 2005
- Add support for gth2 board

Changes to common files:
* common/cmd_ide.c
Swap input data if GTH2 and Big endian

* cpu/mips/au1x00_serial.c
Call GTH2 log functions.
Make sure watchdog is kicked

* cpu/mips/cpu.c
If gth2, hang during reset until hardware watchdog kicks in

* include/asm-mips/au1x00.h
Add GPIO definitions

/Thomas
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Partially applied. The following parts were rejected and should be re-submitted after cleanup:

cpu/mips/au1x00_serial.c:

* No board specific code should be necessary here.
* No watchdog reset should ever be needed in serial_tstc()

cpu/mips/cpu.c:

* No board specific code should be necessary here.

All other parts applied, thanks.

Best regards,

Wolfgang Denk

Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
A day without sunshine is like night.