tests: Add ac97 qtest

Signed-off-by: Andreas Färber <afaerber@suse.de>
diff --git a/MAINTAINERS b/MAINTAINERS
index c43643c..e81967c 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -666,6 +666,7 @@
 S: Maintained
 F: audio/
 F: hw/audio/
+F: tests/ac97-test.c
 
 Block
 M: Kevin Wolf <kwolf@redhat.com>