Add notes for significant changes to payloads, such as new payloads and
version updates.
Change-Id: I607d732beee07396a8002e5e504375d9dc4d7eda
Signed-off-by: Nicholas Chin <nic.c3.14@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/64752
Reviewed-by: Felix Singer <felixsinger@posteo.net>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>