MAINTAINERS: add git repository for Xen

Signed-off-by: David Vrabel <[email protected]>
Signed-off-by: Konrad Rzeszutek Wilk <[email protected]>
diff --git a/MAINTAINERS b/MAINTAINERS
index d5e4ff3..49d308f 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -9544,6 +9544,7 @@
 M:	Boris Ostrovsky <[email protected]>
 M:	David Vrabel <[email protected]>
 L:	[email protected] (moderated for non-subscribers)
+T:	git git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip.git
 S:	Supported
 F:	arch/x86/xen/
 F:	drivers/*/xen-*front.c