OpenBSD refuses to implement it due to security concerns,
so use glob instead.
Change-Id: I7531cfe91deff240f7874d94d5acb340b87e51b6
Signed-off-by: Patrick Georgi <patrick@georgi-clan.de>
Reviewed-on: http://review.coreboot.org/10028
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>