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/m68k/apollo/config.c b/arch/m68k/apollo/config.c
index b2eea00..cb8e760 100644
--- a/arch/m68k/apollo/config.c
+++ b/arch/m68k/apollo/config.c
@@ -25,7 +25,7 @@
 u_long timer_physaddr;
 u_long apollo_model;
 
-extern void dn_sched_init(irqreturn_t (*handler)(int,void *));
+extern void dn_sched_init(irq_handler_t handler);
 extern void dn_init_IRQ(void);
 extern unsigned long dn_gettimeoffset(void);
 extern int dn_dummy_hwclk(int, struct rtc_time *);
@@ -176,7 +176,7 @@
 
 irqreturn_t dn_timer_int(int irq, void *dev_id)
 {
-	irqreturn_t (*timer_handler)(int, void *) = dev_id;
+	irq_handler_t timer_handler = dev_id;
 
 	volatile unsigned char x;
 
@@ -188,7 +188,7 @@
 	return IRQ_HANDLED;
 }
 
-void dn_sched_init(irqreturn_t (*timer_routine)(int, void *))
+void dn_sched_init(irq_handler_t timer_routine)
 {
 	/* program timer 1 */
 	*(volatile unsigned char *)(timer+3)=0x01;