IB/qib: Use rdmavt device allocation function

No longer do drivers need to call into the IB core to allocate the verbs
device.  Use the functionality provided by rdmavt.

Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Reviewed-by: Harish Chegondi <harish.chegondi@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

drivers/infiniband/hw/qib/qib_init.c

@@ -1131,9 +1131,12 @@ struct qib_devdata *qib_alloc_devdata(struct pci_dev *pdev, size_t extra)
 {
 	unsigned long flags;
 	struct qib_devdata *dd;
-	int ret;
+	int ret, nports;
 
-	dd = (struct qib_devdata *) ib_alloc_device(sizeof(*dd) + extra);
+	/* extra is * number of ports */
+	nports = extra / sizeof(struct qib_pportdata);
+	dd = (struct qib_devdata *)rvt_alloc_device(sizeof(*dd) + extra,
+						    nports);
 	if (!dd)
 		return ERR_PTR(-ENOMEM);