ARM: OMAP: use gpio_to_irq

Have most uses of OMAP_GPIO_IRQ() use gpio_to_irq() instead.
Calls used for table initialization are left alone, at least
this time around.

Re-apply the relevant part to of Dave's patch to onenand after
switching to the mainline version of the onenand driver.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Tony Lindgren <tony@atomide.com>

drivers/mtd/onenand/omap2.c

@@ -636,7 +636,7 @@ static int __devinit omap2_onenand_probe(struct platform_device *pdev)
 	}
 	omap_set_gpio_direction(c->gpio_irq, 1);
 
-	if ((r = request_irq(OMAP_GPIO_IRQ(c->gpio_irq),
+	if ((r = request_irq(gpio_to_irq(c->gpio_irq),
 			     omap2_onenand_interrupt, IRQF_TRIGGER_RISING,
 			     pdev->dev.driver->name, c)) < 0)
 		goto err_release_gpio;
@@ -723,7 +723,7 @@ err_release_dma:
 	if (c->dma_channel != -1)
 		omap_free_dma(c->dma_channel);
 	if (c->gpio_irq)
-		free_irq(OMAP_GPIO_IRQ(c->gpio_irq), c);
+		free_irq(gpio_to_irq(c->gpio_irq), c);
 err_release_gpio:
 	if (c->gpio_irq)
 		omap_free_gpio(c->gpio_irq);
@@ -760,7 +760,7 @@ static int __devexit omap2_onenand_remove(struct platform_device *pdev)
 	omap2_onenand_shutdown(pdev);
 	platform_set_drvdata(pdev, NULL);
 	if (c->gpio_irq) {
-		free_irq(OMAP_GPIO_IRQ(c->gpio_irq), c);
+		free_irq(gpio_to_irq(c->gpio_irq), c);
 		omap_free_gpio(c->gpio_irq);
 	}
 	iounmap(c->onenand.base);