Although qemu-ga has supported vsock since 2016 it was not documented on the man page. Also add the socket address representation to the qga --help output. Fixes:586ef5dee7("qga: add vsock-listen method") Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Stefano Garzarella <sgarzare@redhat.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com> (cherry picked from commit7b46aadbbf) Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>