Add a more detailed explanation of internal flashing
on the HP Compaq 8200 Elite SFF.
Signed-off-by: Václav Straka <venda.straka@gmail.com>
Change-Id: I53a697a2dd6c10fff8f287284f75d229c7c4b636
Reviewed-on: https://review.coreboot.org/c/coreboot/+/74248
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nicholas Chin <nic.c3.14@gmail.com>
