IB/cma: Define option to set ack timeout and pack tos_set

Define new option in 'rdma_set_option' to override calculated QP timeout
when requested to provide QP attributes to modify a QP.

At the same time, pack tos_set to be bitfield.

Signed-off-by: Danit Goldberg <danitg@mellanox.com>
Reviewed-by: Moni Shoua <monis@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Reviewed-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

include/uapi/rdma/rdma_user_cm.h

@@ -300,6 +300,10 @@ enum {
 	RDMA_OPTION_ID_TOS	 = 0,
 	RDMA_OPTION_ID_REUSEADDR = 1,
 	RDMA_OPTION_ID_AFONLY	 = 2,
+	RDMA_OPTION_ID_ACK_TIMEOUT = 3
+};
+
+enum {
 	RDMA_OPTION_IB_PATH	 = 1
 };