Move most of the timer interrupt related PPC code to ppc_lib/interrupts.c
* Patch by Anders Larsen, 17 Sep 2003:
Bring ARM memory layout in sync with the documentation:
stack and malloc-heap are now located _below_ the U-Boot code
- fix cmd_ide.c for non ppc boards (read/write functions did not
add ATA base address)
- fix for shannon board
- #ifdef CONFIG_IDE_8xx_DIRECT some otherwise unused code
* Patch by Sangmoon Kim, 07 Oct 2003:
add support for debris board
seconds instead of ms.
* Patch by Robert Schwebel, 1 Nov 2002:
XScale related cleanup (affects all ARM boards)
* Cleanup of names, warnings and README.
wdenk