mainboard/supermicro/h8qgi: transition away from device_t

Replace the use of the old device_t definition inside
mainboard/supermicro/h8qgi.

Change-Id: I6cf123272283edbf89e854e4aa1a15a2d566133e
Signed-off-by: Antonello Dettori <dev@dettori.io>
Reviewed-on: https://review.coreboot.org/17305
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
1 file changed