MAINTAINERS: make me a reviewer of VIRTIO CORE AND NET DRIVERS

First of all, I personally love open source, linux and virtio. I have
also participated in community work such as virtio for a long time.

I think I am familiar enough with virtio/virtio-net and is adequate as a
reviewer.

Every time there is some patch/bug, I wish I can get pinged
and I will feedback on that.

For me personally, being a reviewer is an honor and a responsibility,
and it also makes it easier for me to participate in virtio-related
work. And I will spend more time reviewing virtio patch. Better advance
virtio development

I had some contributions to virtio/virtio-net and some support for it.

* per-queue reset
* virtio-net xdp
* some bug fix
* ......

I make a humble request to grant the reviewer role for the virtio core
and net drivers.

Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Message-Id: <20230413071610.43659-1-xuanzhuo@linux.alibaba.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>