[coreboot-gerrit] Patch merged into coreboot/master: mainboard/intel/leafhill: initial leafhill board changes

the following patch was just integrated into master:
commit dcc0aa84fa20eaf8feefb21d1662d4716c64ad98
Author: Brenton Dong 
Date:   Wed Jan 4 16:39:43 2017 -0700

mainboard/intel/leafhill: initial leafhill board changes

This commit makes the initial changes to support the Intel Leaf Hill
    CRB with Apollo Lake silicon. Memory parameters and some GPIOs are set.

The google/reef directory is used as a template, and the same IFWI
    stitching process as reef is used to generate a bootable image.

Apollo Lake silicon requires a boot media region called IFWI which includes
    assets such as CSE firmware, PMC microcode, CPU microcode, and boot
    firmware.

Change-Id: Id92f0458548e3054d86f5faa8152d58d902f4418
    Signed-off-by: Brenton Dong 
    Reviewed-on: https://review.coreboot.org/18039
    Tested-by: build bot (Jenkins)
    Reviewed-by: Werner Zeh

See https://review.coreboot.org/18039 for details.

-gerrit