mainboard/intel/harcuvar: Add support for Intel Harcuvar CRB

The Harcuvar CRB is a reference platform of Intel Atom C3000 SoC
("Denverton" and "Denverton-NS") for the communications segment/market.
The MohonPeak coreboot was used as the starting template with
additions/modifications from other Intel Apollo Lake/Skylake coreboot.
Tested with TianoCore payload (UDK2015) and Poky (Yocto
Project Reference Distro) 2.0 with kernel 4.1.8 booted from
SATA drive and external USB pendrive.

Change-Id: I088833e36e2d22d1fe1610b8dca1454092da511a
Signed-off-by: Mariusz Szafranski <mariuszx.szafranski@intel.com>
Reviewed-on: https://review.coreboot.org/20862
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: FEI WANG <wangfei.jimei@gmail.com>
23 files changed