pinctrl: Rename pinctrl_utils_dt_free_map to pinctrl_utils_free_map

Rename pinctrl_utils_dt_free_map to pinctrl_utils_free_map, since
it does not depend on device tree despite the current name. This
will enforce a consistent naming in pinctr-utils.c and will make
it clear it can be called from outside device tree (e.g. from
ACPI handling code).

Signed-off-by: Irina Tirdea <irina.tirdea@intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/bcm/pinctrl-cygnus-mux.c

@@ -737,7 +737,7 @@ static const struct pinctrl_ops cygnus_pinctrl_ops = {
 	.get_group_pins = cygnus_get_group_pins,
 	.pin_dbg_show = cygnus_pin_dbg_show,
 	.dt_node_to_map = pinconf_generic_dt_node_to_map_group,
-	.dt_free_map = pinctrl_utils_dt_free_map,
+	.dt_free_map = pinctrl_utils_free_map,
 };
 
 static int cygnus_get_functions_count(struct pinctrl_dev *pctrl_dev)