regulator: tps65132: switch to using devm_fwnode_gpiod_get()

devm_fwnode_get_index_gpiod_from_child() is going away as the name is
too unwieldy, let's switch to using the new devm_fwnode_gpiod_get().

Note that we no longer need to check for NULL as devm_fwnode_gpiod_get()
will return -ENOENT if GPIO is missing.
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Link: https://lore.kernel.org/r/20191004231017.130290-7-dmitry.torokhov@gmail.comReviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>

drivers/regulator/tps65132-regulator.c

@@ -136,9 +136,10 @@ static int tps65132_of_parse_cb(struct device_node *np,
 	struct tps65132_reg_pdata *rpdata = &tps->reg_pdata[desc->id];
 	int ret;
 
-	rpdata->en_gpiod = devm_fwnode_get_index_gpiod_from_child(tps->dev,
-					"enable", 0, &np->fwnode, 0, "enable");
-	if (IS_ERR_OR_NULL(rpdata->en_gpiod)) {
+	rpdata->en_gpiod = devm_fwnode_gpiod_get(tps->dev, of_fwnode_handle(np),
+						 "enable", GPIOD_ASIS,
+						 "enable");
+	if (IS_ERR(rpdata->en_gpiod)) {
 		ret = PTR_ERR(rpdata->en_gpiod);
 
 		/* Ignore the error other than probe defer */
@@ -147,10 +148,12 @@ static int tps65132_of_parse_cb(struct device_node *np,
 		return 0;
 	}
 
-	rpdata->act_dis_gpiod = devm_fwnode_get_index_gpiod_from_child(
-					tps->dev, "active-discharge", 0,
-					&np->fwnode, 0, "active-discharge");
-	if (IS_ERR_OR_NULL(rpdata->act_dis_gpiod)) {
+	rpdata->act_dis_gpiod = devm_fwnode_gpiod_get(tps->dev,
+						      of_fwnode_handle(np),
+						      "active-discharge",
+						      GPIOD_ASIS,
+						      "active-discharge");
+	if (IS_ERR(rpdata->act_dis_gpiod)) {
 		ret = PTR_ERR(rpdata->act_dis_gpiod);
 
 		/* Ignore the error other than probe defer */