pinctrl: at91: use dev_dbg() instead of printk()

Use dev_dbg() instead of printk(KERN_DEBUG) to avoid the following
checkpatch.pl warning:
"Prefer [subsystem eg: netdev]_dbg([subsystem]dev, ... then
dev_dbg(dev, ... then pr_debug(...  to printk(KERN_DEBUG ...".
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Link: https://lore.kernel.org/r/20220831135636.3176406-4-claudiu.beznea@microchip.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/pinctrl-at91.c

@@ -1659,8 +1659,8 @@ static int at91_gpio_suspend(struct device *dev)
 	if (!at91_chip->wakeups)
 		clk_disable_unprepare(at91_chip->clock);
 	else
-		printk(KERN_DEBUG "GPIO-%c may wake for %08x\n",
-		       'A' + at91_chip->id, at91_chip->wakeups);
+		dev_dbg(dev, "GPIO-%c may wake for %08x\n",
+			'A' + at91_chip->id, at91_chip->wakeups);
 
 	return 0;
 }