IB/core: Change provider's API of create_cq to be extendible

Add a new ib_cq_init_attr structure which contains the
previous cqe (minimum number of CQ entries) and comp_vector
(completion vector) in addition to a new flags field.
All vendors' create_cq callbacks are changed in order
to work with the new API.

This commit does not change any functionality.

Signed-off-by: Matan Barak <matanb@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Reviewed-By: Devesh Sharma <devesh.sharma@avagotech.com> to patch #2
Signed-off-by: Doug Ledford <dledford@redhat.com>
diff --git a/drivers/infiniband/core/verbs.c b/drivers/infiniband/core/verbs.c
index 658c283..7bffdbe 100644
--- a/drivers/infiniband/core/verbs.c
+++ b/drivers/infiniband/core/verbs.c
@@ -1079,8 +1079,9 @@
 			   void *cq_context, int cqe, int comp_vector)
 {
 	struct ib_cq *cq;
+	struct ib_cq_init_attr attr = {.cqe = cqe, .comp_vector = comp_vector};
 
-	cq = device->create_cq(device, cqe, comp_vector, NULL, NULL);
+	cq = device->create_cq(device, &attr, NULL, NULL);
 
 	if (!IS_ERR(cq)) {
 		cq->device        = device;