UBUNTU: SAUCE: RDMA Infiniband for Windows Azure is dependent on amd64

BugLink: http://bugs.launchpad.net/bugs/1641139Signed-off-by: Tim Gardner <tim.gardner@canonical.com>
Acked-by: Brad Figg <brad.figg@canonical.com>
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>

drivers/infiniband/hw/vmbus-rdma/Kconfig

 config HYPERV_INFINIBAND_ND 
 	tristate "Microsoft Hyper-V Network Direct"
-	depends on PCI && INET && INFINIBAND && HYPERV
+	depends on PCI && INET && INFINIBAND && HYPERV && X86_64
 	---help---
 	  This is a low-level driver for Vmbus based NetworkDirect.