nb/intel/i440: Get rid of device_t

Use of `device_t` has been abandoned in ramstage.

Change-Id: Ibd01659f518b7a2b1aaf334fe5b16cfb936b68b7
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/23672
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
2 files changed