ARM: S3C24XX: Remove s3c2410_gpio_getirq()

Remove s3c2410_gpio_getirq() as the only users is the pm code, and it
can be replicated by using gpio_to_irq().

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
diff --git a/arch/arm/plat-s3c24xx/pm.c b/arch/arm/plat-s3c24xx/pm.c
index 37ea822..691fecc 100644
--- a/arch/arm/plat-s3c24xx/pm.c
+++ b/arch/arm/plat-s3c24xx/pm.c
@@ -91,7 +91,7 @@
 {
 	unsigned long irqstate;
 	unsigned long pinstate;
-	int irq = s3c2410_gpio_getirq(pin);
+	int irq = gpio_to_irq(pin);
 
 	if (irqoffs < 4)
 		irqstate = s3c_irqwake_intmask & (1L<<irqoffs);