docs/fingerprint: Add Chrome OS Project Configuration details
docs/fingerprint: Add Chrome OS Project Configuration details

model.yaml files no longer have to be created by hand; instead the
Chrome OS Project Configuration tools will generate it.

BRANCH=none
BUG=b:180410925
TEST=view in gitiles

Signed-off-by: Tom Hughes <fc5c12f30a5ed2baa0581f44ee14ad1eb7b20d83@chromium.org>
Change-Id: Id7eb218b7b908ed77dec33a2b7479bbf5a72fc4c
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2721139
Reviewed-by: Craig Hesling <383db090fd8ef907a606ac8a9eccd2962bc489cf@chromium.org>

coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec