MAINTAINERS: add myself as a Xen maintainer

I have made many significant contributions to the Xen code in QEMU,
particularly the recent patches introducing a new PV device framework.
I intend to make further significant contributions, porting other PV back-
ends to the new framework with the intent of eventually removing the
legacy code. It therefore seems reasonable that I become a maintainer of
the Xen code.
Signed-off-by: NPaul Durrant <paul.durrant@citrix.com>
Acked-by: NAnthony Perard <anthony.perard@citrix.com>
Acked-by: NStefano Stabellini <sstabellini@kernel.org>
Signed-off-by: NAnthony PERARD <anthony.perard@citrix.com>

MAINTAINERS

@@ -407,6 +407,7 @@ Guest CPU Cores (Xen):
 X86
 M: Stefano Stabellini <sstabellini@kernel.org>
 M: Anthony Perard <anthony.perard@citrix.com>
+M: Paul Durrant <paul.durrant@citrix.com>
 L: xen-devel@lists.xenproject.org
 S: Supported
 F: */xen*