[ARM] S3C24XX: GPIO: Change to macros for GPIO numbering

Prepare to remove the large number of S3C2410_GPxn defines
by moving to S3C2410_GPx(n) in arch/arm.

The following perl was used to change the files:

    perl -pi~ -e 's/S3C2410_GP([A-Z])([0-9]+)([^_^0-9])/S3C2410_GP\1\(\2\)\3/g'

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
diff --git a/arch/arm/mach-s3c2400/gpio.c b/arch/arm/mach-s3c2400/gpio.c
index 7a7ed417..81ebe2f 100644
--- a/arch/arm/mach-s3c2400/gpio.c
+++ b/arch/arm/mach-s3c2400/gpio.c
@@ -33,10 +33,10 @@
 
 int s3c2400_gpio_getirq(unsigned int pin)
 {
-	if (pin < S3C2410_GPE0 || pin > S3C2400_GPE7_EINT7)
+	if (pin < S3C2410_GPE(0) || pin > S3C2400_GPE7_EINT7)
 		return -1;  /* not valid interrupts */
 
-	return (pin - S3C2410_GPE0) + IRQ_EINT0;
+	return (pin - S3C2410_GPE(0)) + IRQ_EINT0;
 }
 
 EXPORT_SYMBOL(s3c2400_gpio_getirq);