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>
diff --git a/lib/efi_selftest/Makefile b/lib/efi_selftest/Makefile
index 2c44251..31b444f 100644
--- a/lib/efi_selftest/Makefile
+++ b/lib/efi_selftest/Makefile
@@ -19,6 +19,7 @@
 efi_selftest_console.o \
 efi_selftest_devicepath.o \
 efi_selftest_events.o \
+efi_selftest_event_groups.o \
 efi_selftest_exitbootservices.o \
 efi_selftest_fdt.o \
 efi_selftest_gop.o \