The idea is that they can at some point add extended attributes to the header.
That also needs to be passed, but let's start simple.
Change-Id: I80359843078b149ac433ee3d739ea192592e16e7
Signed-off-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-on: http://review.coreboot.org/11216
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>