pinctrl: renesas: rzg2l: Improve rzg2l_gpio_register()

Update rzg2l_gpio_register() to use driver data for chip->names
and check for gpio-range. This allows reusing the driver for
SoC's with different port pin definitions(eg:- RZ/G2UL SoC has
fewer ports compared to RZ/G2L and port pin definitions are
different).
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Link: https://lore.kernel.org/r/20220206194614.13209-2-biju.das.jz@bp.renesas.comSigned-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

drivers/pinctrl/renesas/pinctrl-rzg2l.c

@@ -1090,12 +1090,12 @@ static int rzg2l_gpio_register(struct rzg2l_pinctrl *pctrl)
 	}
 
 	if (of_args.args[0] != 0 || of_args.args[1] != 0 ||
-	    of_args.args[2] != ARRAY_SIZE(rzg2l_gpio_names)) {
+	    of_args.args[2] != pctrl->data->n_port_pins) {
 		dev_err(pctrl->dev, "gpio-ranges does not match selected SOC\n");
 		return -EINVAL;
 	}
 
-	chip->names = rzg2l_gpio_names;
+	chip->names = pctrl->data->port_pins;
 	chip->request = rzg2l_gpio_request;
 	chip->free = rzg2l_gpio_free;
 	chip->get_direction = rzg2l_gpio_get_direction;