Add support for new board coffeelake RVP.
This patch is a copy patch and copies entire coffeelake_rvp folder from
cannonlake_rvp.
Changes done on top of copy:
1. Change copyright year from 2017 to 2018
2. Rename Cannonlake to Coffelake whenever applicable
3. Update entries in Kconfig and Kconfig.name
4. Rename variant directories to match coffeelake boards
Change-Id: Id37bfeb0ae51fd630fec96273216dbb2900782c7
Signed-off-by: Maulik V Vaghela <maulik.v.vaghela@intel.com>
Reviewed-on: https://review.coreboot.org/27904
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: Naresh Solanki <naresh.solanki@intel.com>
Reviewed-by: Lijian Zhao <lijian.zhao@intel.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
