net/mlx5: Enumerate page fault types

Give meaningful names to type of WQE page faults.
Signed-off-by: Moni Shoua <monis@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>

include/linux/mlx5/device.h

@@ -212,6 +212,13 @@ enum {
 	MLX5_PFAULT_SUBTYPE_RDMA = 1,
 };
 
+enum wqe_page_fault_type {
+	MLX5_WQE_PF_TYPE_RMP = 0,
+	MLX5_WQE_PF_TYPE_REQ_SEND_OR_WRITE = 1,
+	MLX5_WQE_PF_TYPE_RESP = 2,
+	MLX5_WQE_PF_TYPE_REQ_READ_OR_ATOMIC = 3,
+};
+
 enum {
 	MLX5_PERM_LOCAL_READ	= 1 << 2,
 	MLX5_PERM_LOCAL_WRITE	= 1 << 3,