Document the board and process of building/flashing coreboot on it.
Change-Id: I5d60508dbde10373b0da2fb4ece0992760d3121c
Signed-off-by: Alicja Michalska <ahplka19@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/81611
Reviewed-by: Nicholas Chin <nic.c3.14@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
