MAINTAINERS: fix virtio file pattern

The pattern did not catch include/linux/virtio.h.

Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
diff --git a/MAINTAINERS b/MAINTAINERS
index 1b0a87f..d08e3be 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -13295,7 +13295,7 @@
 F:	tools/virtio/
 F:	drivers/net/virtio_net.c
 F:	drivers/block/virtio_blk.c
-F:	include/linux/virtio_*.h
+F:	include/linux/virtio*.h
 F:	include/uapi/linux/virtio_*.h
 F:	drivers/crypto/virtio/