Documentation: add Skulls to the list of distributions

There seem to be enough users of the Skulls images to have the project
listed in our docs.

Change-Id: I5a8f24005fec87d53af7ad53370cb6a704378622
Signed-off-by: Martin Kepplinger <martink@posteo.de>
Reviewed-on: https://review.coreboot.org/c/31463
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>

0 files changed, 0 insertions, 0 deletions