[IA64] Update to use account_{steal,idle}_ticks

This patch fixes the following errors caused by
79741dd35713ff4f6fd0eafd59fa94e8a4ba922d which changed
the prototypes of account_steal_time() and account_idle_time().

>   CC      arch/ia64/xen/time.o
> arch/ia64/xen/time.c: In function 'consider_steal_time':
> arch/ia64/xen/time.c:132: warning: passing argument 1 of 'account_steal_time' makes integer from pointer without a cast
> arch/ia64/xen/time.c:132: error: too many arguments to function 'account_steal_time'
> arch/ia64/xen/time.c:133: warning: passing argument 1 of 'account_steal_time' makes integer from pointer without a cast
> arch/ia64/xen/time.c:133: error: too many arguments to function 'account_steal_time'

Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Tony Luck <tony.luck@intel.com>

arch/ia64/xen/time.c

@@ -129,8 +129,8 @@ consider_steal_time(unsigned long new_itm)
 		blocked = stolentick;
 
 	if (stolen > 0 || blocked > 0) {
-		account_steal_time(NULL, jiffies_to_cputime(stolen));
-		account_steal_time(idle_task(cpu), jiffies_to_cputime(blocked));
+		account_steal_ticks(stolen);
+		account_idle_ticks(blocked);
 		run_local_timers();
 
 		if (rcu_pending(cpu))