MAINTAINERS: Add docs/system/arm/xenpvh.rst

Signed-off-by: Edgar E. Iglesias <edgar.iglesias@amd.com>
Acked-by: Stefano Stabellini <sstabellini@kernel.org>
diff --git a/MAINTAINERS b/MAINTAINERS
index 3584d6a..c2fb0c2 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -559,6 +559,7 @@
 F: include/sysemu/xen.h
 F: include/sysemu/xen-mapcache.h
 F: stubs/xen-hw-stub.c
+F: docs/system/arm/xenpvh.rst
 
 Guest CPU Cores (NVMM)
 ----------------------