Make fadt revision match its length. Solves Windows 7 checked build assert. Signed-off-by: Marshall Buschman <mbuschman@lucidmachines.com> Acked-by: Peter Stuge <peter@stuge.se> git-svn-id: svn://svn.coreboot.org/coreboot/trunk@6628 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1