Patch merged into coreboot/master: soc/intel/skylake: use SPI flash boot_device_rw() for ealy stages

the following patch was just integrated into master:
commit e4cc8cd00b3b39eecac604cc402b8111f8fd5657
Author: Aaron Durbin 
Date:   Thu Aug 11 23:55:39 2016 -0500

soc/intel/skylake: use SPI flash boot_device_rw() for ealy stages

If the boot device is SPI flash use the common one in the
    early stages. While tweaking the config don't auto select
    SPI_FLASH as that is handled automatically by the rest of the
    build system.

BUG=chrome-os-partner:56151

Change-Id: Ifd51a80fd008c336233d6e460c354190fcc0ef22
    Signed-off-by: Aaron Durbin 
    Reviewed-on: https://review.coreboot.org/16202
    Tested-by: build bot (Jenkins)
    Reviewed-by: Furquan Shaikh

See https://review.coreboot.org/16202 for details.

-gerrit