device: ignore NONE devices behind bridge

Ignore NONE devices in dev_is_active_bridge that are commonly used to
indicate hotplug capable ports.

Tested on Lenovo T520:
The empty ExpressCard Slot is no longer marked as active bridge.

Change-Id: I23347270aaab17647023969091ce4bcdd41dd57a
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/32441
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>

0 files changed, 0 insertions, 0 deletions