util: Fix up a few comments after the "file is part of the" removal

Change-Id: I930739bea705988181b2e60f30516f4a7cb5c82d
Signed-off-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41197
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

util/board_status/getrevision.sh

@@ -1,6 +1,6 @@
 #!/bin/sh
 #
-# flashrom project but has been heavily modified since then.
+# From the flashrom project but heavily modified since then.
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by