clk: sunxi-ng: Display index when clock registration fails

Add clock index to clock registration failure message. Clock name
is sometimes not available, when things go really wrong.
Signed-off-by: NPriit Laes <plaes@plaes.org>
Signed-off-by: NMaxime Ripard <maxime.ripard@free-electrons.com>

drivers/clk/sunxi-ng/ccu_common.c

@@ -63,8 +63,8 @@ int sunxi_ccu_probe(struct device_node *node, void __iomem *reg,
 
 		ret = clk_hw_register(NULL, hw);
 		if (ret) {
-			pr_err("Couldn't register clock %s\n",
-			       clk_hw_get_name(hw));
+			pr_err("Couldn't register clock %d - %s\n",
+			       i, clk_hw_get_name(hw));
 			goto err_clk_unreg;
 		}
 	}