9p: add virtio transport

This adds a transport to 9p for communicating between guests and a host
using a virtio based transport.

Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>


diff --git a/net/9p/Kconfig b/net/9p/Kconfig
index 71bc110..bafc50c 100644
--- a/net/9p/Kconfig
+++ b/net/9p/Kconfig
@@ -23,6 +23,13 @@
 	  file descriptors.  TCP/IP is the default transport for 9p,
 	  so if you are going to use 9p, you'll likely want this.
 
+config NET_9P_VIRTIO
+	depends on NET_9P && EXPERIMENTAL && VIRTIO
+	tristate "9P Virtio Transport (Experimental)"
+	help
+	  This builds support for a transports between
+	  guest partitions and a host partition.
+
 config NET_9P_DEBUG
 	bool "Debug information"
 	depends on NET_9P