Revision 2523

In src/southbridge/intel/i82801ca, first the smbus registers are mapped at i/o
space offset 0x1000, and later is the acpi registers also mapped at 0x1000. 
This patch fixes this behavior. Closes #44

Signed-off-by: <chn@virtutech.se>
Acked-by: Stefan Reinauer <stepan@coresystems.de>