Patch merged into coreboot/master: soc/intel/apollolake: add LPDDR4 sku selection support

the following patch was just integrated into master:
commit 87579aee69d8a82eac46f8d1f249560efab8afd4
Author: Aaron Durbin 
Date:   Wed Jul 6 22:45:57 2016 -0500

soc/intel/apollolake: add LPDDR4 sku selection support

Instead of having all the mainboards put similar logic
    into their own code provide common mechanism for memory
    SKU selection. A function, meminit_lpddr4_by_sku(), is
    added that selects the proper configuration based on the
    SKU id and configuration passed in. LPDDR4 speed as well
    as DRAM device density configuration is associated for
    each logical channel per SKU id.

BUG=chrome-os-partner:54949
    BRANCH=None
    TEST=Built and used on reef for memory config.

Change-Id: Ifc6a734040bb61a58bc3d4c128a6420a71245c6c
    Signed-off-by: Aaron Durbin 
    Reviewed-on: https://review.coreboot.org/15559
    Tested-by: build bot (Jenkins)
    Reviewed-by: Paul Menzel 
    Reviewed-by: Furquan Shaikh

See https://review.coreboot.org/15559 for details.

-gerrit