[review] drivers: regulator: print regulator tree summary

Shorten variable names and rephrase inline comment.

Signed-off-by: Etienne Carriere <[email protected]>

core/drivers/regulator/regulator.c

@@ -354,15 +354,14 @@ static bool regulator_is_supply_last_supplied(struct regulator *regulator)
 static bool indent_with_empty_string(struct regulator *node_regulator,
 				     int node_indent, int cur_indent)
 {
-	struct regulator *indent_plus_one_regulator = NULL;
-	int indent = 0;
+	struct regulator *r = node_regulator;
+	int n = 0;
 
-	/* Find the supplied and supply of @cur_indent indentation level */
-	indent_plus_one_regulator = node_regulator;
-	for (indent = 0; indent < node_indent - cur_indent - 1; indent++)
-		indent_plus_one_regulator = indent_plus_one_regulator->supply;
+	/* Find supply at indentation level @node_indent - @cur_indent - 1 */
+	for (n = 0; n < node_indent - cur_indent - 1; n++)
+		r = r->supply;
 
-	return regulator_is_supply_last_supplied(indent_plus_one_regulator);
+	return regulator_is_supply_last_supplied(r);
 }
 
 static void __maybe_unused print_regulator(struct regulator *regulator,