gpio: davinci: Do not mention legacy API in the code

Replace mentioning of legacy API by the latest one.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

drivers/gpio/gpio-davinci.c

@@ -534,7 +534,7 @@ static int davinci_gpio_irq_setup(struct platform_device *pdev)
 	}
 
 	/*
-	 * Arrange gpio_to_irq() support, handling either direct IRQs or
+	 * Arrange gpiod_to_irq() support, handling either direct IRQs or
 	 * banked IRQs.  Having GPIOs in the first GPIO bank use direct
 	 * IRQs, while the others use banked IRQs, would need some setup
 	 * tweaks to recognize hardware which can do that.