IB/mlx4: Report checksum offload cap for RAW QP when query device

Signed-off-by: Bodong Wang <bodong@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
diff --git a/drivers/infiniband/hw/mlx4/main.c b/drivers/infiniband/hw/mlx4/main.c
index efecdf0..38be8dc 100644
--- a/drivers/infiniband/hw/mlx4/main.c
+++ b/drivers/infiniband/hw/mlx4/main.c
@@ -442,6 +442,8 @@
 		props->device_cap_flags |= IB_DEVICE_MANAGED_FLOW_STEERING;
 	}
 
+	props->device_cap_flags |= IB_DEVICE_RAW_IP_CSUM;
+
 	props->vendor_id	   = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
 		0xffffff;
 	props->vendor_part_id	   = dev->dev->persist->pdev->device;