clocksource/drivers/timer-ti-dm: Fix spelling mistake "detectt" -> "detect"

There is a spelling mistake in a pr_err message. Fix it.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20200519224428.6195-1-colin.king@canonical.com

drivers/clocksource/timer-ti-dm-systimer.c

@@ -697,7 +697,7 @@ static int __init dmtimer_systimer_init(struct device_node *np)
 		dmtimer_systimer_select_best();
 
 	if (!clocksource && !clockevent) {
-		pr_err("%s: unable to detectt system timers, update dtb?\n",
+		pr_err("%s: unable to detect system timers, update dtb?\n",
 		       __func__);
 
 		return -EINVAL;