Add support of Variant board model for existing intel/kblrvp,
since there might be more RVP board supports under
intel/kblrvp. Existing is for KBL RVP3 board.
BUG=none
BRANCH=none
TEST=Built and boot Kaby Lake RVP3
Change-Id: I041a07a273dbb77e422d48591f06b5f1011cd9f7
Signed-off-by: Barnali Sarkar <barnali.sarkar@intel.com>
Reviewed-on: https://review.coreboot.org/17630
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins)