sb/broadcom/bcm5785: Get rid of device_t

Use of device_t has been abandoned in ramstage.

Change-Id: Ia39347f9d07bb0055ea4686a8b319f323f68062e
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/26403
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
7 files changed