[coreboot] patch for support mainboard pistachio:

[Li, Maggie]

Hi,
Attachment is the patch for mainboard PISTACHIO. The following ACPI features are supported.
1. S1, S4, S5 sleep and wake up (by power button).
2. Thermal configuration based on ADT7475.
3. HPET timer.
4. Interrupt routing based on ACPI table.

Signed-off-by:  Maggie Li 
Reviewed-by:    Michael Xie <[e-mail]  >

Please check it, thanks.

<<pistachio.patch>> 
Best regards
Maggie li