Patch merged into coreboot/master: sb/amd/sb700: Add option to increase SPI speed to 33MHz

the following patch was just integrated into master:
commit 6e5421d2a887737fc7c8a916d54151f9b1706f6d
Author: Timothy Pearson 
Date:   Tue Aug 23 15:41:05 2016 -0500

sb/amd/sb700: Add option to increase SPI speed to 33MHz

Some SB700-based systems and ROMs support high speed (33MHz) SPI
    access instead of the power-on default 16.5MHz.  Add an option
    to enable high speed SPI access in the bootblock, and set the
    default value to Disabled.  This greatly decreases boot time on
    SB700-based systems, especiall when a large payload is in use.

On a KGPE-D16 with a Petitboot (Linux + initramfs) payload, the
    command prompt was accessible within 20 seconds of power on, which
    incidentally is faster than the proprietary BIOS on the same machine
    could even reach the GRUB bootloader.

Change-Id: Iadbd9bb611754262ef75a5e5a6ee4390a46e45cf
    Signed-off-by: Timothy Pearson 
    Test: Booted KGPE-D16 with Linux payload
    Reviewed-on: https://review.coreboot.org/16306
    Tested-by: build bot (Jenkins)
    Tested-by: Raptor Engineering Automated Test Stand 
    Reviewed-by: Martin Roth

See https://review.coreboot.org/16306 for details.

-gerrit