superio/fintek: Add initial support for Fintek F71869AD.

Change-Id: I41f1ee20517dd179a4dee914ab7f6332739e326e
Signed-off-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-on: http://review.coreboot.org/4784
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
7 files changed