clocksource: arch_timer: Pass clock event to set_mode callback

There isn't any reason why we don't pass the event here and we'll
need it in the near future for memory mapped arch timers anyway.

Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Marc Zyngier <Marc.Zyngier@arm.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: Mark Rutland <mark.rutland@arm.com>

drivers/clocksource/arm_arch_timer.c

@@ -140,7 +140,7 @@ static int __cpuinit arch_timer_setup(struct clock_event_device *clk)
 
 	clk->cpumask = cpumask_of(smp_processor_id());
 
-	clk->set_mode(CLOCK_EVT_MODE_SHUTDOWN, NULL);
+	clk->set_mode(CLOCK_EVT_MODE_SHUTDOWN, clk);
 
 	clockevents_config_and_register(clk, arch_timer_rate,
 					0xf, 0x7fffffff);