MAINTAINERS: add German Maglione as virtiofs co-maintainer

German Maglione is a co-maintainer of the virtiofsd userspace device
implementation (https://gitlab.com/virtio-fs/virtiofsd) and is currently
one of the most active virtiofs developers outside the kernel.

I have not worked on virtiofs except to review kernel patches for a few
years now and would like German to take over from me gradually. It is
healthier to have a kernel maintainer who is actively involved. I expect
to remove myself in a few months.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Link: https://patch.msgid.link/20251126211548.598469-1-stefanha@redhat.com
Signed-off-by: Christian Brauner <brauner@kernel.org>

Author: stefanhaRH

MAINTAINERS

@@ -27156,6 +27156,7 @@ F:	arch/s390/include/uapi/asm/virtio-ccw.h
 F:	drivers/s390/virtio/
 
 VIRTIO FILE SYSTEM
+M:	German Maglione <gmaglione@redhat.com>
 M:	Vivek Goyal <vgoyal@redhat.com>
 M:	Stefan Hajnoczi <stefanha@redhat.com>
 M:	Miklos Szeredi <miklos@szeredi.hu>