superio/nuvoton: Add support for Nuvoton NCT6776

Add support for both NCT6776D and NCT6776F devices.

Change-Id: If6686ea0a1cd6be537e286699b4ee8f88ba8ad7c
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-on: http://review.coreboot.org/5450
Tested-by: build bot (Jenkins)
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
5 files changed