flashchips: Mark S25FL208K as tested

As report by Frédéric Germain on 2017-12-17.

Change-Id: I0a7fc10e75f4a675de41e9765525defe2d2640e4
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/28883
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
1 file changed