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/sun3/config.c b/arch/m68k/sun3/config.c
index 43e4aa3..4851b84 100644
--- a/arch/m68k/sun3/config.c
+++ b/arch/m68k/sun3/config.c
@@ -35,7 +35,7 @@
 char sun3_reserved_pmeg[SUN3_PMEGS_NUM];
 
 extern unsigned long sun3_gettimeoffset(void);
-extern void sun3_sched_init(irqreturn_t (*handler)(int, void *));
+extern void sun3_sched_init(irq_handler_t handler);
 extern void sun3_get_model (char* model);
 extern void idprom_init (void);
 extern int sun3_hwclk(int set, struct rtc_time *t);
@@ -162,7 +162,7 @@
 	sun3_bootmem_alloc(memory_start, memory_end);
 }
 
-void __init sun3_sched_init(irqreturn_t (*timer_routine)(int, void *))
+void __init sun3_sched_init(irq_handler_t timer_routine)
 {
 	sun3_disable_interrupts();
         intersil_clock->cmd_reg=(INTERSIL_RUN|INTERSIL_INT_DISABLE|INTERSIL_24H_MODE);