net/mlx5: DR: Fix cast to restricted __be32

raw_ip actual type is __be32 and not u32.
Fix that and get rid of the warning.

drivers/net/ethernet/mellanox/mlx5/core/steering/dr_ste.c:906:31:
warning: cast to restricted __be32
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>

drivers/net/ethernet/mellanox/mlx5/core/steering/dr_ste.c

@@ -869,7 +869,7 @@ static void dr_ste_copy_mask_misc(char *mask, struct mlx5dr_match_misc *spec)
 
 static void dr_ste_copy_mask_spec(char *mask, struct mlx5dr_match_spec *spec)
 {
-	u32 raw_ip[4];
+	__be32 raw_ip[4];
 
 	spec->smac_47_16 = MLX5_GET(fte_match_set_lyr_2_4, mask, smac_47_16);