mb/winent: Get rid of device_t

Use of device_t has been abandoned in ramstage.

Change-Id: Ice673efd52e414e4064734883ca92dce5fc059cd
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/26093
Reviewed-by: Werner Zeh <werner.zeh@siemens.com>
Reviewed-by: Jonathan A. Kollasch <jakllsch@kollasch.net>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
4 files changed