net/mlx5: Change missing SyncE capability print to debug

Lack of SyncE capability should not emit a warning, change the print to
debug level.

Signed-off-by: Gal Pressman <gal@nvidia.com>
Reviewed-by: Jianbo Liu <jianbol@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

drivers/net/ethernet/mellanox/mlx5/core/dev.c

@@ -210,7 +210,7 @@ static bool is_dpll_supported(struct mlx5_core_dev *dev)
 		return false;
 
 	if (!MLX5_CAP_MCAM_REG2(dev, synce_registers)) {
-		mlx5_core_warn(dev, "Missing SyncE capability\n");
+		mlx5_core_dbg(dev, "Missing SyncE capability\n");
 		return false;
 	}