IRQ: Use the new typedef for interrupt handler function pointers

Use the new typedef for interrupt handler function pointers rather than
actually spelling out the full thing each time.  This was scripted with the
following small shell script:

#!/bin/sh
egrep -nHrl -e 'irqreturn_t[ 	]*[(][*]' $* |
while read i
do
    echo $i
    perl -pi -e 's/irqreturn_t\s*[(]\s*[*]\s*([_a-zA-Z0-9]*)\s*[)]\s*[(]\s*int\s*,\s*void\s*[*]\s*[)]/irq_handler_t \1/g' $i || exit $?
done

Signed-Off-By: David Howells <dhowells@redhat.com>
diff --git a/arch/arm/mach-pxa/idp.c b/arch/arm/mach-pxa/idp.c
index a4cb875..64df440 100644
--- a/arch/arm/mach-pxa/idp.c
+++ b/arch/arm/mach-pxa/idp.c
@@ -125,7 +125,7 @@
 	.pxafb_lcd_power = &idp_lcd_power
 };
 
-static int idp_mci_init(struct device *dev, irqreturn_t (*idp_detect_int)(int, void *), void *data)
+static int idp_mci_init(struct device *dev, irq_handler_t idp_detect_int, void *data)
 {
 	/* setup GPIO for PXA25x MMC controller	*/
 	pxa_gpio_mode(GPIO6_MMCCLK_MD);