uboot-phytec

efi_selftest: unit test for event groups

Supply a unit test for event groups.

Create multiple events in an event group. Signal each event once and check
that all events are notified once in each round.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>