Patch merged into coreboot/master: mainboard/google/reef: set SLP_S3_L assertion width to 28ms

the following patch was just integrated into master:
commit c3d74273a748c0cfc78b258369451c35c122372b
Author: Aaron Durbin 
Date:   Thu Aug 25 15:44:39 2016 -0500

mainboard/google/reef: set SLP_S3_L assertion width to 28ms

The reef board needs at least ~28ms for its S0 rails to discharge
    when S3 is entered. Because of the granularity in the chipset the
    effective SLP_S3_L assertion width is 50ms.

BUG=chrome-os-partner:56581

Change-Id: I20514eb0825cd4bc2ee9276b648204b7bfd6a7b0
    Signed-off-by: Aaron Durbin 
    Reviewed-on: https://review.coreboot.org/16327
    Tested-by: build bot (Jenkins)
    Reviewed-by: Duncan Laurie 
    Reviewed-by: Paul Menzel

See https://review.coreboot.org/16327 for details.

-gerrit