Move the test code for OS detection in a extra directory to split it
from the main flashrom code.
Change-Id: Id911f17f4100f242e1fde10d23a8459ddf38b369
Signed-off-by: Thomas Heijligen <thomas.heijligen@secunet.de>
Reviewed-on: https://review.coreboot.org/c/flashrom/+/58015
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
