MAINTAINERS: Add maintainers to XEN section

Signed-off-by: Anastasiia Lukianenko <anastasiia_lukianenko@epam.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/board/xen/xenguest_arm64/MAINTAINERS b/board/xen/xenguest_arm64/MAINTAINERS
index 787e9e0..264920e 100644
--- a/board/xen/xenguest_arm64/MAINTAINERS
+++ b/board/xen/xenguest_arm64/MAINTAINERS
@@ -1,5 +1,6 @@
 XEN GUEST FOR ARM64
-M:	Andrii Anisov <andrii_anisov@epam.com>
+M:	Anastasiia Lukianenko <anastasiia_lukianenko@epam.com>
+M:	Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
 S:	Maintained
 F:	board/xen/xenguest_arm64/
 F:	doc/board/xen/