Add denverton soc chipset name. Change-Id: I0fd8494123490d6ccc21af2ed30c30d50ddb4e8e Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/68693 Reviewed-by: Lean Sheng Tan <sheng.tan@9elements.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>