build system: add dependencies for SeaBIOS output

Change-Id: I7b9f1574f6d487c0a6e5c9095c25ee973a96fa89
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Reviewed-on: https://review.coreboot.org/12577
Reviewed-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
Tested-by: Raptor Engineering Automated Test Stand <noreply@raptorengineeringinc.com>
Reviewed-by: Martin Roth <martinroth@google.com>
Tested-by: build bot (Jenkins)
1 file changed