pinctrl: stm32: Remove check for pins-are-numbered

Upstream has dropped this property from the device trees that we import,
so drop our check for it to fix boot up on STM32MP1.

Link: https://lore.kernel.org/all/20221129023401.278780-3-bero@baylibre.com/
Fixes: 03b1dd7 ("dts: update to v6.3-rc1")
Reported-by: David Jander <david@protonic.nl>
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Link: https://lore.barebox.org/20230331103123.1525200-1-a.fatoum@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

drivers/pinctrl/pinctrl-stm32.c

@@ -348,11 +348,6 @@ static int stm32_pinctrl_probe(struct device *dev)
 	struct device_node *np = dev->of_node, *child;
 	int ret;
 
-	if (!of_find_property(np, "pins-are-numbered", NULL)) {
-		dev_err(dev, "only pins-are-numbered format supported\n");
-		return -EINVAL;
-	}
-
 	for_each_available_child_of_node(np, child)
 		if (of_property_read_bool(child, "gpio-controller"))
 			nbanks++;