9p: restrict RDMA usage

Make 9p's RDMA option depend on INET since it uses Infiniband rdma_*
functions and that code depends on INET.  Otherwise 9p can try to
use symbols which don't exist.

ERROR: "rdma_destroy_id" [net/9p/9pnet_rdma.ko] undefined!
ERROR: "rdma_connect" [net/9p/9pnet_rdma.ko] undefined!
ERROR: "rdma_create_id" [net/9p/9pnet_rdma.ko] undefined!
ERROR: "rdma_create_qp" [net/9p/9pnet_rdma.ko] undefined!
ERROR: "rdma_resolve_route" [net/9p/9pnet_rdma.ko] undefined!
ERROR: "rdma_disconnect" [net/9p/9pnet_rdma.ko] undefined!
ERROR: "rdma_resolve_addr" [net/9p/9pnet_rdma.ko] undefined!

I used an if/endif block so that the menu items would remain
presented together.

Also correct an article adjective.
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/9p/Kconfig

@@ -13,22 +13,24 @@ menuconfig NET_9P
 
 	  If unsure, say N.
 
+if NET_9P
+
 config NET_9P_VIRTIO
-	depends on NET_9P && EXPERIMENTAL && VIRTIO
+	depends on EXPERIMENTAL && VIRTIO
 	tristate "9P Virtio Transport (Experimental)"
 	help
 	  This builds support for a transports between
 	  guest partitions and a host partition.
 
 config NET_9P_RDMA
-	depends on NET_9P && INFINIBAND && EXPERIMENTAL
+	depends on INET && INFINIBAND && EXPERIMENTAL
 	tristate "9P RDMA Transport (Experimental)"
 	help
-	  This builds support for a RDMA transport.
+	  This builds support for an RDMA transport.
 
 config NET_9P_DEBUG
 	bool "Debug information"
-	depends on NET_9P
 	help
 	  Say Y if you want the 9P subsystem to log debug information.
 
+endif