clocksource: samsung_pwm_timer: Use proper clockevents max_delta

This patch replaces hardcoded -1 argument passed to
clockevents_config_and_register() with tcnt_max calculated based on
variant data.

This fixes invalid max delta configuration for 16-bit timers of s3c24xx.

Signed-off-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Olof Johansson <olof@lixom.net>

drivers/clocksource/samsung_pwm_timer.c

@@ -263,7 +263,8 @@ static void __init samsung_clockevent_init(void)
 	pwm.clock_count_per_tick = clock_rate / HZ;
 
 	time_event_device.cpumask = cpumask_of(0);
-	clockevents_config_and_register(&time_event_device, clock_rate, 1, -1);
+	clockevents_config_and_register(&time_event_device,
+						clock_rate, 1, pwm.tcnt_max);
 
 	irq_number = pwm.irq[pwm.event_id];
 	setup_irq(irq_number, &samsung_clock_event_irq);