RDMA/ocrdma: Add dependency on INET

Now that ocrdma supports IP-based addressing, we need to depend on
INET, since ocrdma registers itself for net device events.
Signed-off-by: NRoland Dreier <roland@purestorage.com>

drivers/infiniband/hw/ocrdma/Kconfig

 config INFINIBAND_OCRDMA
 	tristate "Emulex One Connect HCA support"
-	depends on ETHERNET && NETDEVICES && PCI && (IPV6 || IPV6=n)
+	depends on ETHERNET && NETDEVICES && PCI && INET && (IPV6 || IPV6=n)
 	select NET_VENDOR_EMULEX
 	select BE2NET
 	---help---