[coreboot-gerrit] Patch merged into coreboot/master: 0390112 AMD Parmer: fix issue 'S3 fails to suspend after wake up from USB keyboard'

the following patch was just integrated into master:
commit 0390112407c042211428a2aee1ab77422caab338
Author: Siyuan Wang 
Date:   Fri May 31 19:36:30 2013 +0800

AMD Parmer: fix issue 'S3 fails to suspend after wake up from USB keyboard'

This issue can be reproduced in Linux by the following steps:
    1) use pm-suspend to suspend.
    2) use USB keyboard to wake up.
    3) use pm-suspend to suspend. FAIL To SUSPEND.

The cause of this issue is:
    USB devices use bit 11(0x0b) of GP0_STS represents S3 wake up event,
    but this bit is not clear after wake up. So OS thinks there is a
    wake up signal and wake up immediately.

In this patch, I add AcpiGpe0Blk using MMIO access and write 1
    on bit 11. I have tested on Parmer.

Change-Id: Iec3078bf29de99683e7cd3ef4e178fbeb4dc09c1
    Signed-off-by: Siyuan Wang 
    Signed-off-by: Siyuan Wang 
    Reviewed-on: http://review.coreboot.org/3347
    Tested-by: build bot (Jenkins)
    Reviewed-by: Dave Frodin 
    Reviewed-by: Marc Jones 
    Reviewed-by: Ronald G. Minnich

See http://review.coreboot.org/3347 for details.

-gerrit