clocksource/drivers/tegra: Drop unneeded typecasting in one place

There is no need to cast void because kernel allows to do that without
a warning message from a compiler.
Acked-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>

drivers/clocksource/timer-tegra.c

@@ -83,7 +83,7 @@ static int tegra_timer_set_periodic(struct clock_event_device *evt)
 
 static irqreturn_t tegra_timer_isr(int irq, void *dev_id)
 {
-	struct clock_event_device *evt = (struct clock_event_device *)dev_id;
+	struct clock_event_device *evt = dev_id;
 	void __iomem *reg_base = timer_of_base(to_timer_of(evt));
 
 	writel_relaxed(TIMER_PCR_INTR_CLR, reg_base + TIMER_PCR);