[coreboot] [RFC] ACPI for ASUS P2B (Intel 440BX/82371EB)

[Idwer Vollering]

This patch adds preliminary and untested ACPI support to Intel 440BX/82371EB
(e.g. ASUS P2B and its variants/similar boards).
It focuses on an/the ASUS P2B which comes with three ram slots, hence the
change to src/northbridge/intel/i440bx/raminit.c.

Some parts are based on code from other boards and need some work.
It is also based on a patch [1] from Keith Hui: in the attached patch parts
of src/southbridge/intel/i82371eb/i82371.h are and
src/southbridge/intel/i82371eb/i82371eb_smbus.c is (C) Keith Hui.

Todo:
- create PRT objects
- finish/fix FADT
- finish all other ACPI tables (RSDT, RSDP, DSDT etcetera)
- PIRQ routing
- standby/suspend
- ?

Not Signing-off-by at this point.

Idwer



[1] http://www.coreboot.org/pipermail/coreboot/2010-March/056996.html
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